Five years ago, the average age of P and Q was 15 years. Now average age of P, Q and R today is 20 years. What would be the age of R after 10 years?
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Answer:
Five years ago, the average age of P and Q was 15 years. Now average age of P, Q and R today is 20 years. What would be the age of R after 10 years 30 years.