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ATQ, Difference in interest over 2 years: 8,250 − 7,500 = 750 Annual interest: 750 / 2 = 375 Principal = 7,500 − (5 × 375) = 5,625
Present average age of A, B, and C is 30 years. If 5 years ago, the average age of A and C was 25 years, then find the present age of B.
Five years back, the age ratio of Meera and Sanya was 11:13. Five years from now, the ratio becomes 13:15. What is the average of their present ages?