SOLUTION: A rectangular room is twice as long as it is wide, and its perimeter is 30 meters. Find the width of the room.

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Question 841708: A rectangular room is twice as long as it is wide, and its perimeter is 30 meters. Find the width of the room.
Answer by hovuquocan1997(83) About Me  (Show Source):
You can put this solution on YOUR website!
Let the width be "x", you have the length is as twice as the width, means the length will be "2x"
Perimeter = (Length + width)*2
So you have the equation:
%28x%2B2x%29%2A2+=+30
%283x%29%2A2+=+30
6x+=+30
x+=+5
So your width is 5 meters
TA-DAH
:D