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21 February, 15:11

When a number is increased by 11%, the result is 89. What is the original number to the nearest tenth?

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  1. 21 February, 15:54
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    80.2

    Step-by-step explanation:

    Since the number is being increased by 11%, we can add 100% to it, and get 111%.

    111%/100=1.11

    1.11x=89

    Then, divide by 1.11 on both sides

    x=80.18018018 ...

    Rounded to the nearest tenth,

    x=80.2
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