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Flura [38]
3 years ago
11

Tim counted a total of 40 white cars and yellow cars.there were 9 times as many white cars as yellow cars.how many white cars di

d tim count?
Mathematics
1 answer:
Naddika [18.5K]3 years ago
5 0

you have 2 equations to work with

1st eq.  w + y = 40

2nd eq. w=9y

 multiply everything in 1st equation by 9 to get

9w + 9y = 360

 rearrange 2nd equation to w-9y=0

 now add 9w + 9y = 360 to w-9y = 0

to get 10w=360

dive both sides by 10 to get w=36 white cars



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