(2) Let additional investmentsof B and C respectively after6 months = Rs. x and Rs. 2xRatio of the equivalent capitalsof A, B and C for 1 month=(4200×4+5200×6):3600×6+(3600+x)×4 :2400×6+(2400+2x)×4 =(16800+31200):(21600+14400+4x):(14400+9600+8x) =48000:36000+4x:24000+8x Sum of the terms of ratio = 108000 + 12x According to the question,