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22 February, 08:52

There are 765 marbles in a in a box. there are twice as many blue marbles as green marbles. there are 3 times as many red marbles as blue marbles, how many red marbles in the box

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  1. 22 February, 11:21
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    Let the no. of green marbles be x

    no of blue marbles = 2x

    no of red marbles = 3*2x = 6x

    total marbles = 765

    so, x+2x+6x = 765

    or, x = 765/9 = 85

    no of red marbles = 6*85 = 510
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