Math

A 20 foot piece of rope will be cut into as many 3 and 1\2 foot section as possible. how much rope will be left over?

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asked by Tammy
  1. 20/(3 1/2) = 20/(7/2) = 20*2/7 = 40/7 = 5 5/7

    so, 5 pieces, plus 5/7 of a piece left over.

    Since one piece is 7/2 feet, 5/7 * 7/2 = 5/2 = 2 1/2 feet left over.

    Or, 20 - 5(3 1/2) = 20 - 17 1/2 = 2 1/2 ft left over

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    posted by Steve

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