SOLUTION: The dimension of a rectangle are 30 cm and 18 cm. when its length decreased by x cm and its width is increased by x cm, its area is increased by 35 sq cm. Find the value of x.

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Question 892566: The dimension of a rectangle are 30 cm and 18 cm. when its length decreased by x cm and its width is increased by x cm, its area is increased by 35 sq cm. Find the value of x.
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
(30-x)*(18+x)=(30*18)+35
x=5 and x=7