SOLUTION: A rectangular field is five times as long as it is wide. If the perimeter of the field is 960 feet, what are the dimensions of the field?

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Question 1197404: A rectangular field is five times as long as it is wide. If the perimeter of the field is 960 feet, what are the dimensions of the field?
Answer by MathLover1(20849) About Me  (Show Source):
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let the length be L and the width W
if a rectangular field is five times as long as it is wide, we have
L=5W ......eq.1

if the perimeter of the field is 960 feet, we have
2%28L%2BW%29=960
L%2BW=960%2F2
L%2BW=480 ..........eq.2

substitute L from eq.1
5W%2BW=480
6W=480
W=480%2F6
W=80

go to
L=5W ......eq.1, substitute W
L=5%2A80
L=400

the dimensions of the field are 400ft by 80ft