Bamboo can have an extraordinarily fast growth rate (up to 250 cm per day!).
Unfortunately for Sam, he didn't realize how fast bamboo can grow when he bought a new plant for his living room. He purchased some 50 cm tall bamboo, placed it next to his couch, and then left for a weekend trip.
When he returned 2 days later, his 2.5 m high ceiling was damaged because the bamboo had just started to push through it.
In cm per day, how fast did the bamboo grow?
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and how how in the hell would it damage the ceiling if it was 250cm tall ? it would just touch it
the total growth of the bamboo in two days is : (2.5m - 50cm) =250cm-50cm= 200 cm. , which 50 cm is the original length of the bambo , and 250 is the length of it till touchs the ceiling. since, ( fast=total growth of bamboo/two days) so, ( fast= 200 cm./2 days) = [100 cm/day]
Right guys and d thank you
equal high the ceiling and bamboo. how come the ceiling damaged?
yaa same
Sam bought a 50 cm tall bamboo, then when he go to the weekend trip the height of the bamboo is now in 2.5m to find the solution we must subtract the initial height to the final height then we got the answer of 200cm and divide it in two days we got the final answer of 100cm...
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And it would touch the 2.5m ceiling. Touching isn't damaging. It should be greater than 100
fair but the bamboo grew till it hit the ceiling, the rate at which it grew per day could have still been 250 cm, but since there was no more room for growth the bamboo topped out and when the guy got back 2 days later the bamboo was already at the maximum point. if he came back 4 days later the bamboo wouldn't have grown at the rate of 50 had it still remained at the the 2.5 m mark. The problem is flawed.
same metthod
im the 100th to solve :0
thanks
wowza! i sucks at math but i want to try this xD Thank you!
how many square are their in a chess board?
true
hmm
hmmmm
hmmm ri8
100% right
wonderful
Well done!
Began: 50cm Finish: 2.5 m= 250cm Times: 2 days The answer is: (250-50)/2 days= 100cm
precise answer
but then it would't dmg cieling it would just come up to cileing :/
100
OHHH SO EASY !!!!!!!!!!!!!
Essam Fawaz Essam Fawaz the total growth of the bamboo in two days is : (2.5m - 50cm) =250cm-50cm= 200 cm. , which 50 cm is the original length of the bambo , and 250 is the length of it till touchs the ceiling. since, ( fast=total growth of bamboo/two days) so, ( fast= 200 cm./2 days) = [100 cm/day]
Ugh! So obvious! I forgot it was already 50 cm :(
when it bought then its length was .5 m after 2 days its length is 2.5 m hance its per day growth is 200cm/2 days =1oocm
1 meter = 100 cm, so if it is 2.5 meter then it is 2.5 x 100= 250 cm. Since the problem said it was 50 cm at first you have to subtract 50 from 250. 250 - 50 = 200 cm. You need to know how many cm per day, so you have to take 200 and divide it by 2; 200/2= which results in \boxed{100cm}.
very easy soluation
ok
easy & good solution
Good! According to your answer, on the beginning of the second day, the height of the bamboo will be 150 c.m. It will grow 100 c m on each day. Now can I say that the growth rate on the first day is 100/50 and on the second day is 100/150? Or, the answer is only an average figure? Please comment!
Let x be the length of growth per day of the bamboo.
Then,
0 . 5 + 2 x = 2 . 5 ⟹ 2 x = 2 x = 1 m or x = 1 0 0 c m
Given are the initial height, 50 cm, and the final height, 2.5 m, of the bamboo. The bamboo grew a total of:
5 0 c m − 2 . 5 m = 5 0 c m − 2 5 0 c m = 2 0 0 c m .
Assuming that the bamboo grows evenly during the two-day period, then:
2 d a y s 2 0 0 c m = 1 0 0 d a y c m .
initial height of the tree is : 50 cm height of the ceiling is :250 cm therefore , the growth required by the tree to push the ceiling =250-50=200 cm since ,Sam went out for two days , therefore the required growth should be grow in 2 days ie; grow per day =200/2 =100 cm
the height of ceiling is 2.5m, height of plant is 50 cm - 50 from 250 - he is gone for 2 days - it grew for approx 200cm total 100 cm per day, yeah yeah yeah -- BUT it grew through the ceiling and damaged it - so the answer is >100cm per day
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Looking back to the problem,
When he returned 2 days later, his 2.5 m high ceiling was damaged because the bamboo had just started to push through it.
From the clause "had just started to push through it," it implies that the bamboo haven't grown anything further than the 2.5-meter ceiling.
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the words "damaged" and "pushed through" are the key to this. You trying to defend common sense and observation with a math problem - this is a subjective question. My interpetation of damaged and push through means just that more than - so my answer, which would be correct is that is grew more than 200cm from the initial height of 50cm. >100cm per day is more correct than the 100cm per day
yea , if its 250cm it will only touch the ceiling
Ceiling height=2.5m=2.5*100=250cm.
bamboo grow in 2 days=250cm-50cm=200cm.
so bamboo grow in cm per day=200/2=100cm
The ceiling is 2.5 m(250 cm) high and the plant is initially 50 cm so it must grow 200 cm to push through the ceiling. So if it grew 200 cm in 2 days then for 1 day it must have grown 100 cm.
change in growth 250-50 i.e 200 cms in 2 days 100 cm per day
100
Let x be the rate of growth of the bamboo.
Let 2x for the growth of bamboo in two days
Equation:
2x+50=250 (since 2.5 m is 250 cm)
2x=200
x=100
As it was first only 50 cm tall ..then rate of growth per day is 200/2 = 100 cm
(y)
rate of growing=250cm/day (not necessary data for this solution), the given days=2, the height of ceiling=2.5 m=250 cm, given height of bamboo=50 cm, the height of growm bamboo tree after 2 days=250-50=200 cm, so the rate of growing= 200/2=100 cm/day
height of the ceiling =2.5m=250cm.Now the plant was already 50 cm tall,so it had to grow another 200 cm to touch the ceiling.expecting that the growth is uniform the growth per day will be 200/2=100 cm per day
Initial length of bamboo=50 cm. Length of the bamboo found after=2.5m=250cm. Total growth=250-50 =200cm time taken =2 days rate of growth=200/2=100cm per day
If the ceiling was 250 cm high, and it was damaged because the bamboo pushed THROUGH it, it would stand to reason that the bamboo grew at a rate FASTER than 100 cm per day
Ceiling = 250cm, Starting height = 50cm,
so 50 (Starting height) + 100 (New height) + 100 (New height) = 250 ceiling
50cm + 2days = 2.5m And 2.5m = 250cm So 50cm +2days = 250cm And minus 50cm to the both sides So it will be 2days= 200cm And divide it by 2 to the both sides So Day= 100cm So the FINAL answer is 100
Bamboo already grown = 50 cm or .5 m Height of ceiling =2.5 m total growth = 2 m or 200 cm Daily growth = 200/2 = 100 cm
2.5 m = 250 cm. so 250 - 50 = 200 and he returned in 2 days so 200/2 gives result 100
His ceiling is just 2.5m or 250cm. The bamboo was 50cm tall when he left. So 250 - 50cm = 200cm gap from ceiling. He left for two days, so per day bamboo grown atleast 100cm.
After 2 days, height of the plant was 250 cm. So, in 2 days plant grow 200 cm (250 - 50). So, in 1 day, 200/2= 100 cm.
2.5m=250cm already it grown 50 cm so per day 100 cm
50cm bamboo has to grow up to 250cm in two days,i e possible only by a growth rate of 100cm/day ,in two days it will grow up to 250cm(50+200).
Initial height of the bamboo = 5 0 cm and height of ceiling = 2 . 5 m = 2 5 0 cm.
So, bamboo reached the ceiling in 2 days, so that means it grew ( 2 5 0 − 5 0 ) cm = 2 0 0 cm in 2 days.
So, Average growth per day = 2 2 0 0 = 1 0 0 cm
IT is clear from the question that the bamboo has grown up from 50 cm to 2.5 m .let the change in length be x so,
50 cm + x=250 cm
on calculating we get x=200 cm
to calculate the rate ( r) of growth in 2 days
-
* r=200/ 2
* and we get the answer 100 cm
Si ya media 50 cm antes de que se fuera, como 2.5 m es igual a 250 cm, a los 250 le quitas los 50 que ya tenia y como se fue por 2 dias, divides entre dos el resultado. Entonces el resultado es 100.
2.5 meter (250 cm) high celing gets damaged after 2 days the bamboo was already 50 cm tall which means the bamboo grew 200 cm in 2 days and 100 cm per day
We can assure that total height of the bamboo , when he returned to home is 2.5m .Intial height was 50cm so after 2 days it make up to 250cm. 250-50=200cm difference then each day bammboo growed upto 100cm.The answer is 100cm
It is because the initial height of bamboo was 50 cm and its total height after 2 days became 250 cm = 2.5 m, so the increase is 200 cm in two days which means that the bamboo had grown with the speed of 100 cm/day.
The Bamboo plant was 50 cm tall and ceiling was 250 cm high. So distance between plant and ceiling is 250-50=200 Number of days is 2. So,growing speed of bamboo= 200/2=100 cm/day
2.5 m is equal to 250 cm so when he brought the bamboo it was 50cm , so do this 250-50=200 cm ,he left home for 2 days so tree grow for 100 cm per day
All that you had to know was how many cm are in a meter. 1m=100 cm. since the plant already had a height of 50 cm, you subtract that from the height in cm which was 250-50=200, then divide that by days to equal 100cm
(250cm - 50cm ) / (2 days) = How much did the bamboo grows in a day.
200/2 = 100
But this is tricky, the answer can be anything from 101 to 250. Because the bamboo did push through the 2.5 m high ceiling. If it is 100, The bamboo will just high enough to reach the ceiling and will not push through. Correct me if I am wrong.
the ceiling is =2.5 m or (2.5*100)cm=250cm in height the bamboo has grown up=(250-50)=200cm in height so,growing rate per day=200/2=100cm
Growth in height of bamboo in 2 days = (250-50)cm = 200 cm So growth in height per day = 200/2 cm = 100 cm
2.5 meter = 250 cm
Bamboo was 50 cm tall So, 250-50 = 200 cm After 2 days, 200/2 = 100 cm
1 Metre have 100 Cm. so 2.5 M=250 Cm, 50+200=250 200/2=100cm/day
height of the sealing = 2.5 m = 250cm, h of bamboo = 50 cm , Growth in 2 days = (sealing height - actual height)/number of days = 250-50/2 =100
1 m = 100cm.
Therefore, the present total height i.e. 2.5 m=250cm.
The bamboo was 50cm tall when purchased. Meaning the remaining height of 200cm grew out during the 2 day weekend. Divide this by 2 and we can see that the bamboo grew by 100cm a day.
simple question: initial height=50cm rate of growing per day=250cm max height of ceiling=2.5x100=250cm as after 2 days trips it was as high to damaged the ceiling so it means that at that time it achieved 250 cm height. it grew in 2 day=250-50=200 per day growth=200/2=100
the initial height of the bamboo is 50 cm. and the distance(hieght) beetween floor and cieling is 2.5m or 250 cm. now the distance required by the bamboo to grow is 250 - 50 = 200 cm so it grew 200 cm in 2 days now we can apply the formua for speed but it can be determined intutively that growth of bamboo per day = 200/2 = 100cm/day and hence 100 is the answer
50+2 x = 250 on solving x =100
The initial height of the bamboo is 50cm (assume include the height of the vase) The height of the ceiling is 2.m which is same as 250cm. Since Sam go out for 2 days, so (250-50)cm / 2 days = 100cm/day
There are 100 centimeters in a meter, which means that his ceiling was 250 centimeters high. The bamboo he purchased was already 50 centimeters tall, so that means it grew 200 centimeters in 2 days. 200/2= 100
Bamboo plant height initially.. 50cm Height of the ceiling is 2.5m i.e 250cm "from ground but not above the Bamboo tree's height" Hence increased height is 200cm in 2 days i.e 200cm/2days=100cm/day
2.5 m means 250 cm. On first day height of bamboo was 50 cm. After 2 days height became 250 cm. So increase in height is 200 cm. So increased height per day is 200 divide by 2 = 100 cm
length of bamboo while purchasing it=50 cm height of the ceiling=2.5 m=250 cm length of the grown bamboo=250 cm-50 cm=200 cm according to the question,Sam left the bamboo for 2 days,so in 2 days the bamboo has 200 cm. in 1 day the bamboo has grown=200/2=100 cm (Ans)
The growth rate is UP TO 250 cm a day. This does not mean it's going to be 250 cm in growth every day. Skipping ahead, I see that his ceiling is 2.5 meters high. One meter is 100 centimeters, so I go back to 50 cm, and I imagine 250-50, which is 200. Now, that 200 cm in growth happens in 2 days. 200/2=100 cm.
Height of the ceiling = 2.5 m =250 cm Initial height(i) = 50 cm Height of the plant grown = 200 cm No. of days = 2
Therefore per day growth= 200/2 = 100 cm
Initial height of bamboo is 50 cm Final height of bamboo is 2.5m =250cm Height increased is 250-50=200 average growth =Increase in height/no of days=200/2=100cm ANSWER
2.5 m=250 cm we then subtract 50 cm from 250 cm since it has grown up already = 200 cm we divide 200 cm by 2 since there are 2 days and the only asked is how fast did it grow "per day" so, 100 is the answer.
A whole bunch of math nerds and only a few muddy boots engineers among you. For the ceiling to be damaged/pushed through the bamboo had to grow > 100 cm per day. The only multiple choice answer >100 cm was 150 cm. Therefore 150 cm is the only possible answer.
plant was of 50 cm, ceiling of 2.5 m=250 cm, hence net growth of plant for 2 days=200 cm, for 1 day=200/2=100 cm/day.
let the bamboo can grow x cm in one day. when Sam bought it its height=50 cm height of ceiling=2.5 m=2.5*100 cm=250 cm after 2 days height is 50+x+x=250 50+2 x=250 2 x=250-50=200 x=200/2=100 bamboo can grow in one day=100cm
When he returned 2 days later, bamboo grew from 50 cm to 2.5 m (250 cm) so it grew 200 cm in 2 days so it grew 100 cm for day.
actually 2.5 mtrs means 250 cm and the plant is of 50 cm when sam brought to his home his house ceiling is of 250 cm he went to trip for 2 days and the final step is............ 250 -50=200 200cm divided by 2 days=> 200/2=100
hence proved
It was a Very simple Question. We Know, Speed= Distance/Time. Here, D=2.5m=250cm )of ceiling ), but the tree is already 50cm long. Therefore, Remaining Distance=250-50=200cm. D= 200cm t=2 days substituting the values, S=200/2=100cm/day!!!!!!!!!!
When Sam put the plant , it was 50cm or 0.5m.
After 2 days the plant reached (2.5-.0.5)= 2m So after 1 day the plant reached (2/2)=1m or 100cm
So the growth of the plant 100cm per day.
distance covered = 250cm - 50cm = 200cm; time taken = 2 days; speed = distance / time
Thus, 200 / 2 =100cm / day is the growth rate
1 m = 100 cm increase in height of bamboo tree = 2.5m i.e. 250 cm - 50 cm = 200 cm growth in 2 days = 200 cm growth in 1 day = 200/2 = 100cm
It was damaged if 100 is the correct answer it wouldn't be damaged i can't get it :(
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In two days, the bamboo grew from 5 0 cm to 2 . 5 m, which is 2 5 0 cm. Thus, the total growth is 2 5 0 − 5 0 = 2 0 0 cm. Then, since it took two days, each day (on average) the bamboo grew 2 2 0 0 = 1 0 0 cm.