A.  6 Months

B.  7 Months

C.  8 Months

D.  9 Months

1
Correct Answer :
8 Months
Explanation :

=> A's investment = Rs.85000/-

=> Investment Duration = 1 Year = 12 Months (because profit is being calculated at the end of the year)

=> B's Investment = Rs.42500/-

=> Say, duration of investment by B is N

=> Ratio of investment of A and B = 85000 x 12 : 42500 x N

=> 1020000 : 42500N

=> Ratio of Profit = 3 : 1

=> 1020000 : 42500N = 3 : 1

=> N = 8

So, B's investment must be for 8 Months


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