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19 February, 22:41

Ashley's penny bank is 1/3 full. After she removes 240 pennies, it is 1/9 full. How many pennies can Ashley's bank hold?

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Answers (2)
  1. 19 February, 22:46
    0
    Find change or loss

    1/3 to 1/9

    make denom 9

    1/3 times 3/3=3/9

    from 3/9 to 1/9 is change of 2/9

    so, 240 was removed

    240=2/9 of the bank

    times both sides by 9/2

    2160/2=18/18 of the bank

    1080=bank

    can hold 1080 pennies
  2. 19 February, 23:19
    0
    X = total amount in her bank

    1/3x - 240 = 1/9x

    1/3x - 1/9x = 240

    3/9x - 1/9x = 240

    2/9x = 240

    x = 240 / (2/9)

    x = 240 * 9/2

    x = 2160/2

    x = 1080 <===

    check ... 1/3 (1080) - 240 = 1/9 (1080)

    360 - 240 = 120

    120 = 120 (correct)

    so her bank can hold 1080 pennies
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