SOLUTION: The perimeter of a rectangle is 30 inches, if it's length is three times it's width, find the dimensions, show your work and explain your answer

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Question 945291: The perimeter of a rectangle is 30 inches, if it's length is three times it's width, find the dimensions, show your work and explain your answer
Answer by macston(5194) About Me  (Show Source):
You can put this solution on YOUR website!
W=width; L=Length=3W; perimeter=P=30 inches
P=2(L+W)
30 in=2(3W+W)
30 in=6W+2W
30 in=8W Divide each side by 8
30/8 in=W ANSWER 1:Width is 3.75 inches
L=3W=3(3.75 in)=11.25 in ANSWER 2: Length is 11.25 inches