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The length of a rectangle is 5 meters less than 3 times the width. The perimeter is 46 meters. Find the width.

The length of a rectangle is 5 meters less than 3 times the width. The perimeter is 46 meters. Find the width.
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2 votes
The length of a rectangle is 5 meters less than 3 times the width. The perimeter is 46 meters. Find the width.

User Justino
by
7.6k points

1 Answer

6 votes
Given
L=3W-5 m
Perimeter=46 m
=>
2(W+L)=2W+2(3W-5)=8W-10=46
W=(46+10)/8=7m
L=3W-5=21-5=16m
Check:
perimeter = (7+16)*2=46m [exactly!]
User Sanek Zhitnik
by
8.1k points
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