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3 July, 12:15

the age of Jane is 80% of the age of Alice. If we add both ages the result is 45. Find the age of Jane and Alice

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  1. 3 July, 15:59
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    Age of Alice = 25, Age of Jane = 20.

    Step-by-step explanation:

    Let age of Alice = x

    Then age of Jane is 80% of the age of Alice

    => Age of Jane = 80% of x = 80/100 * x = 0.8x

    Adding the two ages gives 45.

    The two ages are x and 0.8x.

    The sum of the two ages is x + 0.8 x = (1+0.8) x = 1.8x.

    => 1.8 x = 45

    Dividing both sides by 1.8, x = 45/1.8

    => x = 25

    But x represents the age of Alice.

    So age of Alice is 25.

    Age of Jane = 0.8 * 25 = 20

    Verification: Adding the two ages gives 45.
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