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10 August, 11:02

There are red and blue balls in a bag. The number of blue balls is 27 and the red balls are 4/7 of all balls. What is the total number of balls in the bag?

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  1. 10 August, 11:06
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    63.

    Step-by-step explanation:

    The number of blue balls = (1 - 4/7) = 3/7 of all the balls.

    So the total number of balls = 27 * 7/3

    = 9 * 7

    = 63 (answer).
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