The ages of A and B are in the ratio 3:1 . Fifteen years hence , the ratio will be 2:1 . Their present ages are :

A 30 years , 10 years
B 45 years , 15 years
C 21 years , 7 years
D 60 years , 20 years

Correct Answer: 45 years , 15 years

Let the ages of A and B be 3x and x, respectively. Thenx + 153x + 15​ = 12​or 3x + 15 = 2x + 30⟹x = 15∴ A's age = 3×15 = 45yearsB's age = 15years
Bissoy MCQ
#গণিত #Bangladesh Bank #অনুপাত-সমানুপাত (Ratio-Proportion) #Bangladesh Bank - Assistant Director - 2016

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