SOLUTION: A rectangular parking lot has a perimeter of 874. The length is 8 more then twice the width, find the dimensions of the rectangle.

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Question 1154100: A rectangular parking lot has a perimeter of 874. The length is 8 more then twice the width, find the dimensions of the rectangle.
Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!

A rectangular parking lot has a perimeter of 874:
2%28L%2BW%29=874
L%2BW=874%2F2
L%2BW=437......eq.1
if the length L is 8 more then twice the width W, we have
L=2W%2B8 .....eq.2, substitute it in eq.1

2W%2B8%2BW=437......eq.1
3W=437-8
3W=429
W=429%2F3
highlight%28W=143%29

go back to eq.2

L=2W%2B8 .....eq.2, substitute W

L=2%2A143%2B8
L=286%2B8
highlight%28L=294%29


the dimensions of the rectangle are highlight%28294%29 by highlight%28143%29