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200 coins are sorted and kept 3 bags. The first bag has 20 more coins than the second bag. The second bag has twice as many coins as the third bag. How many coins are there in the third bag?

  • Math -

    second bag --- x
    first bag ----- x+20
    third bag = 200 - (x + x+20)
    = 200 - 2x - 20
    = 180 - 2x

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