raphela counted a total of 40 white cars and yellow cars. there were 9 times as many white cars as yellow. how many white cars did Raphael count

Respuesta :

the answer would be 40 x 9 = 360
w+y=40 and w=9y
Substitute.
9y+y=40
10y=40
y=4
w=9x4=36

36 white cars.