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18 September, 22:00

Martha's father is 4 times as old as Martha. Five years ago he was seven times as old as her daughter. What are their present ages?

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  1. 18 September, 23:24
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    Call Martha's age 5 years ago is x So Martha father's age five years ago is 7x

    We have : 7x + 5 = 4 (x + 5)

    3x = 25+5=30 so x = 5 so Martha's present age is 10 and her's father's present age is 40

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