Arithmetic Aptitude - Problems On Age - Discussion

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Q.

The tota of the ages of A, B ahd C at present is 90 years. Ten years ago, the ratio of their ages was 1: 2: 3. What is the age of B at present ?                          [Bank P.O 1993]
A. 40 B. 20
C. 30 D. 18

Answer: Option C
Explaination:

 


Let their ages 10 years ago is x, 2x and 3x years.


10 + 2x + 10 + 3x + 10 = 90 hence x= 10

B's present age = (2x + 10) =30 years.


Discussion

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