Question

Rafael counted a total of 40 white cars and yellow cars. There were 9 times as many white cars as yellow cars. How many whit cars did Rafael count

Answer 1

yellow car = x

 white cars = 9x ( 9 times as many white cars)

9x +x = 40

10x = 40

x = 40/10 =4

4 yellow cars

9*4 = 36 white cars