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07-11-2017
Mathematics

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the length of a rectangle field is 7 m less than 4 times the width. The perimeter is 136 m. Find the width and length of the rectangle.

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Аноним Аноним

07-11-2017

Let width be x m

perimeter = 2L + 2W
W = x and L = 4W - 7 = 4x - 7
so we have the equation

2(4x - 7) + 2x = 136

8x - 14 + 2x = 136
10x = 150
x = 15

So the width = 15m and the length = 4(15) -7 = 53 m. Answer

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