piababyvillazor piababyvillazor

11-03-2020
Mathematics

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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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daocongvinh200pazamp daocongvinh200pazamp

11-03-2020

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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RichRichard RichRichard

11-03-2020

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