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21 November, 13:38

A jar contains 100 marbles. 3/5 of the marbles are black. What fraction of the marbles are black, using 100 as the denominator?

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  1. 21 November, 16:59
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    3/5 are black. To rewrite the fraction with a denominator of 100. Find how many thieves the denominator 5 goes into 100:

    100/5 = 20

    Multiply both the numerator and denominator by 20:

    3/5 = 60/100
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