A. Rs. 2100
B. Rs. 2400
C. Rs. 3600
D. Rs. 4000
Ratio of initial investments = [ (7/2) : (4/3) : (6/5) ] = 105 : 40 : 36
Let the initial investments be 105x, 40x and 36x
=> A : B : C = [ 105x x 4 + (150/100) x 105x x 8 ] : (40x x 12) : (36x x 12)
=> 1680x : 480x : 432x = 35 : 10 : 9
=> Hence, B's share = Rs. [ 21600 x (10/54) ] = Rs. 4000