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16 February, 14:20

If 80% is 60 marks, what is full marks

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  1. 16 February, 16:45
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    Set up a proportion:

    0.80/60 = 1/x

    Cross multiply:

    0.80x = 60

    Divide 0.80 to both sides:

    x = 7.5

    Multiply by 100:

    x = 75
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