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Mathematics, 18.01.2021 18:00 iBrain

The sum of present ages of a father and his son is 80 years. When the father´s age was equal to the present age of the son, the sum of their ages was 40 years . Find their present ages.

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The sum of present ages of a father and his son is 80 years. When the father´s age was equal to the...
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