SOLUTION: Use two equations in two variables to solve the application. A rectangle is 3 times as long as it is wide, and its perimeter is 80 centimeters. Find its dimensions.

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Question 1130660: Use two equations in two variables to solve the application.
A rectangle is 3 times as long as it is wide, and its perimeter is 80 centimeters. Find its dimensions.
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
half perimeter= L+W=40
L=3W
so 3W+W=40
W=10 cm
L=30 cm
The perimeter with those two is 2(10)+2(30)=80 cm