SOLUTION: A rectangle is 3 times as long as it is wide and the perimeter is 56. What is the width

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Question 849237: A rectangle is 3 times as long as it is wide and the perimeter is 56. What is the width
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
x = width
3x = length


P = 2L + 2W

56 = 2(3x) + 2x

56 = 6x + 2x

56 = 8x

8x = 56

x = 56/8

x = 7

3x = 3*7 = 21

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Width = 7
Length = 21