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1 June, 06:38

When a number is decreased by 30% of itself, the result is 28. What is the number?

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  1. 1 June, 08:07
    0
    Number decreased by 30% of itself is 28

    x -.30x = 28

    .70x = 28

    x = 28/.70 = 40

    40 minus 30% of itself is 40 - 12 which does = 28.
  2. 1 June, 09:54
    0
    X -.30x = 28

    .70x = 28

    x = 40
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