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?

Question

a 7.5 feet
b 22.5 feet

Answer 1

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

Answer 2

Perimeter is 2L + 2W

L=3W
Perimeter=6W+2W

I assume you can take if from here.

Answer 3

sorry but i don't get it. can u help? :(

Answer 4

solve for Width in that last equation, then multiply it by 3 to get the length.