When a couple was married, their average age was 22 years. When their first chil...
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When a couple was married, their average age was 22 years. When their first childwasborn, the average age of all the three became16 years. When their second child was born, theaverageof all 4 became 15 years. Find the average age of a couple at the time when their secondchildwas born?
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