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14 October, 23:37

When 4 times a number is increased by 40, the answer is the same as when 100 is decreased by the number. find the number?

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  1. 15 October, 03:32
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    The number is x

    4x+40=100-x

    add x to both sides

    5x+40=100

    minus 40 both sides

    5x=60

    divide both sides by 5

    x=12

    the number is 12
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