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4 November, 14:25

A bag contains purple marbles and blue marbles, 65 in total. The number of purple marbles is 5 more than 3 times the number of blue marbles. How many purple marbles

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  1. 4 November, 14:48
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    Lets say there are x blue marbles.

    Purple marbles = 5 + 3x

    Blue marbles = x

    Total = 65

    5 + 3x + x = 65

    5 + 4x = 65

    4x = 65 - 5 = 60

    x = 60/4 = 15

    Blue marbles = 15

    65 - 15 = 50

    There are 50 purple marbles.
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