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16 December, 09:34

A pile of sand has a weight of 90kg.

The sand is put into a small bag, a medium bag and a large bag

in the ratio 1 : 2 : 7

work out the weight of sand in each bag

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Answers (1)
  1. 16 December, 13:18
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    9Kg, 18Kg and 63 Kg

    Step-by-step explanation:

    Sum the parts of the ratio, 1 + 2 + 7 = 10 parts

    Divide the weight of sand by 10 to find the value of one part of the ratio

    90 Kg : 10 = 9 Kg ← value of 1 part of the ratio, thus

    2 parts = 2 * 9 Kg = 18 Kg

    7 parts = 7 * 9 Kg = 63 Kg

    Thus the weights of each bag are 9 Kg, 18 Kg and 63 Kg
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