SOLUTION: Ysidra paints a room that has 400 square feet of wall space in 2 1/2 hours. At this rate, how long will it take her to paint a room that has 720 square feet of wall space?

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Question 664950: Ysidra paints a room that has 400 square feet of wall space in 2 1/2 hours. At this rate, how long will it take her to paint a room that has 720 square feet of wall space?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

Ysidra paints a room that has 400 square feet of wall space in 2 1/2 hours. 

At this rate, how longhighlight%28x%29 will it take her to paint a room that has 720 square feet of wall space?

400%2F2.5hr+=+720%2Fx    | Cross Multiply to solve for x