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20-05-2016
Mathematics

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A washer and a dryer cost $450 combined. The cost of the washer is two times the cost of the dryer. What is the cost of the dryer?

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apologiabiology apologiabiology

20-05-2016

W+D=450
W is 2 times D
W=2D

sub
2D+D=450
3D=450
divide 3 both sides
D=150
dryer cost $150

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