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16 July, 13:52

If it takes 45 minutes to load 4 1/2 trucks how many minutes will it take to load 7 1/2 trucks

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  1. 16 July, 14:09
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    by proportion the answer is 45 * 7 1/2 / 4 1/2

    = 45 * 15/.2 * 2/9

    = 75 minutes
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