SOLUTION: The length of a rectangle is 7 inches more than three times the width. The perimeter is 78 inches. Find the length and width.

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Question 807035: The length of a rectangle is 7 inches more than three times the width. The perimeter is 78 inches. Find the length and width.
Answer by solver91311(24713) About Me  (Show Source):
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The perimeter of a rectangle is given by:



So, for your rectangle



Or in simpler terms:



Substitute for and then solve for . Once you know calculate

John

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