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30 March, 23:48

A company sells crushed rock in 16-pound bags each bag containing a mixture of quartz to marble is the same for every bag. If 3 bags of crushed rock containa total of 27 pounds of quartz and 21 pounds of marble, how many bags contain 72 pounds of quartz and 52 pounds of marble

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  1. 31 March, 01:32
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    8 bags.

    Step-by-step explanation:

    Each bag will contain 27/3 = 9 pounds of quartz and 21/3 = 7 pounds of marble.

    So there are 72 / 9 = 8 bags which contain 72 pounds of quartz. They will contain 56 pounds of marble, not 52 pounds.
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