Posted by **Anonymous** on Monday, February 9, 2009 at 4:45pm.

Alan built an additional room onto his house. the length of the room is 3 times the width. the perimeter of he room is 60 feet. What is the length of the room?

a 7.5 feet

b 22.5 feet

- math -
**Anonymous**, Monday, February 9, 2009 at 4:47pm
sorry the all options are:

a 7.5 feet

b 22.5 feet

c 15 feet

d 45 feet....

plz explain how to do also. plz . thanks

- math -
**bobpursley**, Monday, February 9, 2009 at 4:47pm
Perimeter is 2L + 2W

L=3W

Perimeter=6W+2W

I assume you can take if from here.

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**Anonymous**, Monday, February 9, 2009 at 4:51pm
sorry but i dont get it. can u help? :(

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**bobpursley**, Monday, February 9, 2009 at 5:05pm
solve for Width in that last equation, then multiply it by 3 to get the length.

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