SOLUTION: The length of a rectangle is four times the width. the perimeter is ninety cm. what is the width and length.

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Question 260985: The length of a rectangle is four times the width. the perimeter is ninety cm. what is the width and length.
Found 2 solutions by rfer, solver91311:
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
90=2x+2(4x)
90=2x+8x
90=10x
x=9 cm
4x=36 cm

Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


The perimeter of a rectangle is given by:



But we are given that:



and the perimeter is 90, so:




Just solve for

John