The Admission Fee of the Fair

Algebra Level 1

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?

800 900 1400 1500

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19 solutions

Aronas Nuresi
Apr 24, 2014

Let a a be the number of adults and c c be the number of children, so a + c = 2200. a+c=2200. Using the ticket cost information, we have 4 a + 1.5 c = 5050. 4a+1.5c=5050.

Substituting a = 2200 c , a=2200-c, we have 4 ( 2200 c ) + 1.5 c = 5050 , 4(2200-c) + 1.5c = 5050, so 8800 2.5 c = 5050. 8800 - 2.5c = 5050. Thus, c = 8800 5050 2.5 = 1500. c = \frac{8800-5050}{2.5} = 1500.

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

Moh Hafidh Iqbal Baihaqi - 7 years, 1 month ago

great solution

GIANLUCA MALTA - 7 years, 1 month ago

superb solution

Asif Arafat - 7 years, 1 month ago

Good solution

Anuj Shikarkhane - 6 years, 11 months ago

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.

Rahat Ibrahim - 6 years, 1 month ago

bem simples (y)

Wesllen Brendo - 7 years, 1 month ago

Let C C be the number of children and A A be the number of adults. Then

C + A = 2200 C+A=2200 \implies A = 2200 C A=2200-C ( 1 ) \color{#D61F06}(1)

1.5 C + 4 A = 5050 1.5C+4A=5050 ( 2 ) \color{#D61F06}(2)

Substitute ( 1 ) \color{#D61F06}(1) in ( 2 ) \color{#D61F06}(2) . We have

1.5 C + 4 ( 2200 C ) = 5050 1.5C+4(2200-C)=5050

1.5 C + 8800 4 C = 5050 1.5C+8800-4C=5050

8800 5050 = 2.5 C 8800-5050=2.5C

3750 = 2.5 C 3750=2.5C

1500 = C \boxed{1500=C}

simply check all options...only "1500 = num of children" satisfies given conditions..

yah - thats what i did :)

Jack McNally - 7 years, 1 month ago

But that would take long time.

Angel Mae Ombid - 7 years ago

Log in to reply

Not really... it actually takes a shorter time than solving it using simultaneous equations.

Tim Pan - 6 years, 11 months ago
Abhishek Bisht
Apr 27, 2014

x + y = 2200 ----- (i) and 4x + 1.5y = 5050 ---- (ii) put the value of "y = 2200 - x" in equation-ii ,we get x = 1500.

Aditya Ms
Nov 15, 2014

1.5x + 4 (2200 -x ) =5050

Tristan McCrea
Mar 7, 2016

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

Marwane Chahoud
Sep 6, 2014

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

Shivanshu Deorani
Aug 12, 2014

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

Ahmed Abdelbasit
Jun 4, 2014

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

Angel Mae Ombid
May 28, 2014

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.

Lira Zabin
May 6, 2014

solving the equation like 4(2200-x)+1.5x=5050 here x is number of children

Vighnesh Raut
Apr 27, 2014

(1.5)x + (2200-x)4 = 5050 ....Solve for x..

Rebhi J
Apr 27, 2014

c+a = 2200 (1) 1.5c+4a = 5050 (2) solving eq. 1, 2 c=1500 a=700

Akshay Joy
Apr 27, 2014

x + y = 2200; 1.5 x+ 4y = 5050; Solve the equation will get x= 1500 as Childrens .

Kayna De Vera
Apr 27, 2014

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...

Jason Vuong
Apr 26, 2014

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 .

Gaurav Kainth - 7 years, 1 month ago

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

Archiet Dev - 7 years, 1 month ago

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