The admission fee at a fair is $1.50 for children and $4.00 for adults. On a certain day, 2200 people enter the fair and $5050 is collected. How many children attended the fair?
This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try
refreshing the page, (b) enabling javascript if it is disabled on your browser and,
finally, (c)
loading the
non-javascript version of this page
. We're sorry about the hassle.
Solve this problem by ; x + y = 2200 ----- (i) and 4x + 1.5y = 5050 ---- (ii)
put the value of "y = 2200 - x" in equation-ii
we get x = 1500.
good solution
great solution
superb solution
Good solution
Admission fee for children is $1.5 not $4..... So you have to multiply x by 1.5 not by 4... The equation will be, 1.5x + 4(2200-x) = 5050.
bem simples (y)
Let C be the number of children and A be the number of adults. Then
C + A = 2 2 0 0 ⟹ A = 2 2 0 0 − C ( 1 )
1 . 5 C + 4 A = 5 0 5 0 ( 2 )
Substitute ( 1 ) in ( 2 ) . We have
1 . 5 C + 4 ( 2 2 0 0 − C ) = 5 0 5 0
1 . 5 C + 8 8 0 0 − 4 C = 5 0 5 0
8 8 0 0 − 5 0 5 0 = 2 . 5 C
3 7 5 0 = 2 . 5 C
1 5 0 0 = C
simply check all options...only "1500 = num of children" satisfies given conditions..
yah - thats what i did :)
But that would take long time.
Log in to reply
Not really... it actually takes a shorter time than solving it using simultaneous equations.
x + y = 2200 ----- (i) and 4x + 1.5y = 5050 ---- (ii) put the value of "y = 2200 - x" in equation-ii ,we get x = 1500.
I thought that ok 1.50 per child and 4.00 for adults well is you divide 1.50 into 5050 you get about 3366 then divide by two saying every adult has one child then you get about 1700 and I picked the closest answer
Solution!
let put x: number of children, y: number of adults
we have: 1.5x + 4y = 5050 (1) x + y= 2200 (2) we multiply the equation number 2 by 4 we get: 4x + 4y = 8800 then (2) - (1) = 2,5x = 5/2x=8800-5050=3750 x=1500 so the solution is: x=1500 children
it was realy simple just we have to check was to multiply the given numbers with 1.5 (cost of children's ticket) and then then subtract the product from 5050 (total money) the number which was remained was to be checked whether it was divisible with 4 (cost of adult's ticket) or not
solving two operating equations we can calculate the required numbers ..... the two operating equations are : ....... c+a=2200 .......& ...... 1.5c+4a=5050........so >> the results are : children = 1500 ..... and adults are : 700
Same equation I used as Abdul Basit Idrees, x+y=2200 and 1.5x+4y=5050 then using elimination method we can get x=1,500.
solving the equation like 4(2200-x)+1.5x=5050 here x is number of children
(1.5)x + (2200-x)4 = 5050 ....Solve for x..
c+a = 2200 (1) 1.5c+4a = 5050 (2) solving eq. 1, 2 c=1500 a=700
x + y = 2200; 1.5 x+ 4y = 5050; Solve the equation will get x= 1500 as Childrens .
by simultaneous equations... 1.5X +4Y = 5050 ----i X + Y = 2200 ----ii where X=number of children and Y=number of adults
X = 1500
=)
Hello,
let x = those children , y = those adults, by simultaneous equation,
x + y = 2200,
x = 2200 - y (1st),
1.5x + 4y = 5050 (2nd),
substitute (1st) into (2nd),
1.5(2200 - y) + 4y = 5050
2.5y = 5050 - 3300
y = 700
x = 2200 - 700 = 1500
therefore, 1500 children were going to the fair...
thanks...
Solve this system of equations x + y = 2200; 1.5x + 4y = 5050;
We got x = 700 (adults), y = 1500 (children)
x + y = 2200; 1.5 x+ 4y = 5050 Solve the equation will get x= 1500 as Childrens .
Lets call adults x. Lets call children y
Given: 2200 people attend the fair. Using x and y write and equation to express this = x + y = 2200
Given: Child admission fee is $1.50
Adult admission fee is $4.00
The total amount collected is $5050.00
4x + 1.5y = 5050
Ok so now we have a system of equations that we can use to solve for x and y
x + y = 2200 AND 4x + 1.5y = 5050
To solve the equations I will demonstrate the substitution method.
Take the first equation and set it equal to x
x + y = 2200
subtract y from both sides
x + y - y = 2200 - y
x = 2200 - y
Now since we have shown that x equals 2200-y we can substitute that for x in the second equation and solve for y
4x + 1.5y = 5050
4(2200-y) + 1.5y = 5050
8800 - 4y + 1.5y = 5050
8800 - 2.5y = 5050
subtract 8800 from both sides
8800 - 8800 - 2.5y = 5050 - 8800
-2.5y = -3750
divide both sides by -2.5
-2.5y/-2.5 = -3750/-2.5
y = 1500
Answer: 1500 children attended the fair
you really work hard
Problem Loading...
Note Loading...
Set Loading...
Let a be the number of adults and c be the number of children, so a + c = 2 2 0 0 . Using the ticket cost information, we have 4 a + 1 . 5 c = 5 0 5 0 .
Substituting a = 2 2 0 0 − c , we have 4 ( 2 2 0 0 − c ) + 1 . 5 c = 5 0 5 0 , so 8 8 0 0 − 2 . 5 c = 5 0 5 0 . Thus, c = 2 . 5 8 8 0 0 − 5 0 5 0 = 1 5 0 0 .