(5) Ratio of the equivalent capitalsof A, B, and C for 1 month =(1600×6+1800×6):[C2000×8)+(2000+4x)4]:[1800×8+(1800+x)×4] =(9600+10800):(16000+8000+16x):(14400+7200+4x) =20400:24000+16x:21600+4x =5100:6000+4x:5400+x ∴ Sum of the terms of ratio =5100+6000+4x+5400+x=16500+5x=