The perimeter of a rectangle is 34 feet. Find the width of the rectangle if the length is 5 feet more than twice the width.
Answer 4 feet
3 feet
5 feet
2 feet
.

Question

The perimeter of a rectangle is 34 feet. Find the width of the rectangle if the length is 5 feet more than twice the width.
Answer    4 feet 
   3 feet 
   5 feet 
   2 feet 
.

anonymous · Answer

Perimeter=2Length + 2Width

Since we know that Length = 2Width + 5 we can work this out.  I will refer to Length and Width as L and W respectively


34=2L+2W
from the problem we know that
L=2W+5
now we plug in what we just got for L
34=2(2W+5)+2W

34=4W+10+2W
Isolate W
34-10=6W

24/6=W

4=W