SOLUTION: The length of a rectangle is 7 meters longer than its width. What is the width of this rectangle if its perimeter is equal to 86 meters? This is the last question on my test and

Question 519453: The length of a rectangle is 7 meters longer than its width. What is the width of this rectangle if its perimeter is equal to 86 meters?
This is the last question on my test and if I don't ge tthis right I fail the test, I really need this help , it would be much appreciated thank you kindly so much!
Found 2 solutions by mananth, stanbon:
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
The length of a rectangle is 7 meters longer than its width. What is the width of this rectangle if its perimeter is equal to 86 meters?
width =w
length = w+7
perimeter = 2(L+W)
perimeter = 2(w+w+7)=86
2(2w+7)=86
/2
2w+7=43
2w=43-7
2w=36
/2
w=18
...
18+18+25+25=86
m.ananth@hotmail.ca
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
The length of a rectangle is 7 meters longer than its width. What is the width of this rectangle if its perimeter is equal to 86 meters?
----
Let width be "W"
Then length is "W+7"
----
Perimeter = 2(length + width)
86 = 2(W+7 + W)
43 = 2W+7
2W = 36
Width = 18 meters
----
Solve for length:
length = W +7 = 25 meters
==========================
Cheers,
Stan H.
==============
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