Ten years ago, the ratio of ages of A and B was 3 : 5. The ratio of their present ages is 2 : 3. Their…
The correct choice is: 40, 60 Let the present ages be \(2k\) and \(3k\). Ten years ago: \(\dfrac{2k-10}{3k-10}=\dfrac35\). \(10k-50=9k-30\Rightarrow k=20\), so the ages are…
Choose your answer
Ten years ago, the ratio of ages of A and B was 3 : 5. The ratio of their present ages is 2 : 3. Their respective ages in years are:
Answer and explanation
Correct answer D
The correct choice is: 40, 60
Let the present ages be and . Ten years ago: .
, so the ages are 40 and 60. (Check: 30 : 50 = 3 : 5.)
Hence the answer is 40, 60.
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NCHM Joint Entrance Examination (NCHM JEE)