SOLUTION: If a painting is 480 sq inches and the width of painting is 1 and one fifth its width, how do I fine dimensions of painting?

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Question 855774: If a painting is 480 sq inches and the width of painting is 1 and one fifth its width, how do I fine dimensions of painting?

Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
If a painting is 480 sq inches and the length of painting is 1 and one fifth its width,
how do I fine dimensions of painting?
:
L * W = 480 sq/in
The length is 1 1/5 the width therefore:
L = 1.2W
Replace L with 1.2W in the area equation
1.2W * W = 480
1.2W^2 = 480
divide both sides by 1.2
W^2 = 480/1.2
W^2 = 400
W = sqrt%28400%29
W = 20" is the width
I'll let you find the Length, check to see if L * W = 480