Rafael counted a total of 40 white cars and yellow cars there were nine times as many white cars and yellow cars how many white cars did Rafael count

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11-09-2015
Mathematics

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Rafael counted a total of 40 white cars and yellow cars there were nine times as many white cars and yellow cars how many white cars did Rafael count

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assassin4234 assassin4234 · Answer 1 · 2015-09-11T23:41:28+02:00

assassin4234 assassin4234

11-09-2015

To do this, it would be easiest to create variables for the different colored cars and then create an algebraic expression using them. For the white cars, I will use variable "W', for the yellow cars, I will use variable "Y".
Because we know that there are 9 times as many white cars, or 9x, we can say:
9Y + Y = 40
Simplify, and we get 10 Y = 40, so Y = 4

Answer: Y = 4

Hope this helped!! :D

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