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1. The length of a  large rectangular room is 7 meters more than its width. If the perimeter is 34 meters, the length of the room.in meters is:

A) 4 meters
 

B) 13.5 meters

C)19 meters

D) 12 meters

E) 6.75 meters
 

Aso if you can, please show your work.

Thank You!

 Apr 10, 2020
 #1
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Let w be the width of the room and that means the length is 7 plus the width.

 

w=w l=w+7

 

The perimeter is 34 meters, and that means 2(w)+2(w+7)=34, 2w+2w+14=34, 4w=20, w= five(5) meters.

 

Thus, the length of the room is 5+7=twelve(12) meters for option (D).

 Apr 11, 2020

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