SOLUTION: The length of a rectangle is 5cm less then 3 times as long as the width. The rectangle has a perimeter of 100. What is the length and width?
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Question 267828: The length of a rectangle is 5cm less then 3 times as long as the width. The rectangle has a perimeter of 100. What is the length and width? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! The length of a rectangle is 5cm less then 3 times as long as the width. The rectangle has a perimeter of 100. What is the length and width?
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Let width be "w".
Then length = 3w-5
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Perimeter = 2(length + width)
100 = 2(3w-5+w)
50 = 4w-5
4w = 55
w = 55/4 = 13 + 3/4 cm
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length = 3(55/4)-5 = 165/4 - 20/4 = 145/4 = 36 1/4 cm
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Cheers,
Stan H.
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