Quantitative Aptitude :: Problems on Ages - Discussion

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Explanation:
As per Formula:
(If the given ages in a ratio a : b then age will be ax and bx)

So age of P will be 7x and Q will be 9x
As per the question:
(9x - 7x) +4 = 2,
=> x = 3
=> P present age will be = 21, Q age will be = 23
So Total of their Present age = 27 + 21 = 48