SOLUTION: The length of a rectangle is five more than twice the width. If the perimeter is 70 feet, find the length?

SOLUTION: The length of a rectangle is five more than twice the width. If the perimeter is 70 feet, find the length?

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Question 314609: The length of a rectangle is five more than twice the width. If the perimeter is 70 feet, find the length?
Answer by texttutoring(324) (Show Source): You can put this solution on YOUR website!
Let l=length and w=width
The formula for perimeter is P=2l+2w and we know that l=2w+5

70=2l+2w

Now replace the l with 2w+5

70=2(2w+5) + 2w
70=4w+10+2w
70=6w+10
60=6w
w=10

l=2w+5
l=2(10)+5
l=25

So the width is 10, and the length is 25.
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