SOLUTION: Would you please help me solve this word problem?? The length of a rectangle is three times its width. The perimeter of the rectangle is 100 inches. What are the dimensions of t

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Question 946629: Would you please help me solve this word problem?? The length of a rectangle is three times its width. The perimeter of the rectangle is 100 inches. What are the dimensions of the rectangle?
Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!

The length L of a rectangle is three times its width W:
L=3W
the perimeter of the rectangle is P=100in
you know that P=2L%2B2W; so, substitute given values for the length and perimeter
100in=2%2A3W%2B2W...solve for W
100in=6W%2B2W
100in=8W
100in%2F8=W
highlight%28W=12.5in%29
find L
L=3W
L=3%2A12.5in
highlight%28L=37.5in%29