Quantitative Aptitude :: Problems on Ages - Discussion

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Explanation:
Ratio of ages fo A and B = 2:3
After 5 years their ages ratio = 3:4
=> ( 2x+5 ) /( 3x+5) = 3/4 => 8x+20=9x+15
=> x=5
So, Present age of A = 2x = (2*5) = 10 years.