Question

Eight people go to a movie. Adult tickets cost $15 and children's tickets cost $8

The total cost was $85. Write an equation and use it to help you find the numbers of
adults and children who went to the movie.

Answer 1

Answer: number of adults = 3, number of children = 5

Explanation:

let the number of adults be x, and the number of children be y.

x + y = 8 , 15x + 8y = 85

1st equation x 8 = 8x + 8y = 64

`8x+8y-15x-8y = 64 - 85\\-7x = -21\\x=3`

substitute x=3

`3+y=8\\y=5`