The perimeter of a rectangular floor is 120 feet. Find the dimensions of the floor if the length is twice the width

The equations to solve this problem are:

120 = 2a +2b

a = 2b

then

120 = 4b +2b

b=20 width

a = 40 length

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The equations to solve this problem are:

120 = 2a +2b

a = 2b

then

120 = 4b +2b

b=20 width

a = 40 length

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