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5 June, 10:58

Four shovels of sand are used for every 5 shovels of gravel in making cement. how many shovels of gravel are needed for 64 shovels of sand?

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  1. 5 June, 11:24
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    For the answer to the question above,

    4 shovels of sand are used for every 5 shovels of gravel

    4s : 5g

    How many shovels of gravel are needed for 64 shovels of sand?

    64s : Xg

    We need to calculate the value of X

    4s : 5g

    64s : Xg

    4s. Xg = 5g. 64s

    X = (5g*64s) / 4sg

    = 5*64/4

    = 5*16

    = 80

    80 shovels of gravel are needed.
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