Question

A group of 11 people are going to the movies one Saturday. Adult tickets cost $13.50 each and child tickets cost $8.25 each. If the total cost for admission to the movies is $111.75, how many children attended the movie?

Answer 1

let a = adult and c = child

and you know

a + c = 11 number of people

13.5a + 8.25c = 111.75 cost


take the number of people equation and make a the subject

a = 11 - c

now substitute it into the cost equation

13.5(11 - c) + 8.25c =111.75

now simplify then solve for c

Answer 2

ok i got 6

Answer 3

is that right?

Answer 4

well I got 7

Answer 5

ohh ok i see what i did wrong