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15 December, 16:26

21 is 70 percent of what number

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  1. 15 December, 16:59
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    30

    You need to make it a porportion 21 over nothing and 70 over 100

    then do 21 x 100 = 2100 and then you need to divide 2100 by 70

    Thats how u get 30
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