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25-08-2017
Mathematics

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The length and width of a rectangle are in a 7:2 ratio. Find the width of the perimeter is 72.

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Banabanana Banabanana

25-08-2017

length = 7x
width = 2x

2(7x + 2x) = 72
7x + 2x = 72/2
9x = 36
x = 36/9
x = 4

width = 2x = 2 * 4 = 8 units

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