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23 August, 19:45

There are 120 bricks in a box. the bricks are red blue or green. there are 1/3 red bricks. 1/4 blue bricks

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  1. 23 August, 20:41
    0
    So you need the fraction of green ones?

    = 1 - 1/3 - 1/4

    = 1 - 4/12 - 3 / 12

    = 12/12 - 4/12 - 3/12

    = 5/12

    and the numbers of each brich are 1/3 * 120 = 40 red

    1/4*120 = 30 blue and 5/12 * 120 = 50 green
  2. 23 August, 20:43
    0
    What you have to do is find what 1/3 is of 120 and 1/4 of 120.

    120/3=40, so each third is 40 bricks

    120/4=30, so each fourth is 30 bricks

    Add those together

    The total of the red bricks and blue bricks is 70

    120-70 = 50

    There would be: 40 red bricks, 30 blue bricks, and 50 green bricks
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