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12 December, 19:12

a barge can safely haul no more than 400 tons across the river. the barge has an empty weight of 24 tons. the average weight of the railroadd cars is 4 tons each. how many railroad cars can the barge haul?

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  1. 12 December, 19:24
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    The barge can carry up to 94 railroad cars.

    Step-by-step explanation:

    Create an inequality to represent the weight of the barge to the max weight.

    24 + 4r ≤ 400

    Solve for r:

    4r ≤ 400 - 24

    4r ≤ 376

    4r ≤ 376/4

    r ≤ 94
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