Teaching UGC NET Mock Test Series 2025 (Paper 1 & 2) Quantitative Aptitude Problem on Age

The ratio of ages of two persons A and B is 3 ∶ 4 and that of ages of B and C is 4 ∶ 5. If the average of all three is 40 years. What is B's age?

1

20 years

2

30 years

3

40 years

4

50 years

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