SOLUTION: The length of the room is 3 times the width and the total area is 75 square meters. What is the length of the living room? please help.

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Question 584846: The length of the room is 3 times the width and the total area is 75 square meters. What is the length of the living room?
please help.
Answer by JBarnum(2146) About Me  (Show Source):
You can put this solution on YOUR website!
l=3w
a=lw
a=75
75=lw
75=3w*w
75=3w^2
25=w^2
5=w
l=3(5)
l=15