The ratio of A’s age 3 years ago and B’s age 5 years ago is 4:5. If A is 4 years younger than B then what is the present age of B?

1:

16

2:

11

3:

None of these

4:

15

5:

14

A = B – 4

$B−5(B−4)−3 $ = $54 $

5B - 5 = 4B - 20

5B - 4B = -20 +5

B = 15

A = 11

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IBPS Clerk Prelims 2016

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