• # question_answer The ages of A and B are in the ratio 3: 1. 15 year hence the ratio will be 2 : 1. Their present ages are A)  45 yrs, 15 yrsB)  60 yrs, 20 yrsC)  30 yrs, 10 yrsD)  21 yrs, 7 yrs

[a] Let Age of A = 3x Age of B = x $\therefore$ $\frac{3x+15}{x+15}=\frac{2}{1}$ $3x+15=2x+30$ x = 15 $\therefore$ Present Age of A = 45 years Present Age of B = 15 years