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Andre and han are moving boxes. Andre can move 4 boxes every half hour. Han can move 5 boxes every half hour. How long will it take andre and han to move all 72 boxes

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marissahernandez468
Four hours because 4+5=9 and in a hour they will move 18 boxes in two hours they will move 36 boxes and in three hours 54 and for four hours 72 boxes

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