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9 July, 22:52

The sum of a number and 6% of itself is 42.4. find the number

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Answers (2)
  1. 9 July, 22:54
    0
    40

    Step-by-step explanation:

    6% of number = 6/100 * x = 6x/100 = 3x/50

    Sum of the number and 6% of itself = 42.4

    x + (3x/50) = 42.4

    (50x+3x) / 50 = 42.4

    53x = 42.4 * 50

    53x = 2120

    x = 2120/53

    x = 40
  2. 9 July, 23:03
    0
    The answer is x = 40

    Step-by-step explanation:

    6% of a number is 6/100 * x

    Of means multiply.

    so 6% of x = 6/100 * x = 6 * x / 100 = 0.06x

    Now just put these two together.

    x + 0.06x = 42.4 Combine the left

    1.06x = 42.4 Divide by 1.06

    x = 42.4 / 1.06

    x = 40
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