A & B can do a work in 8 days, B & C can do the same work in 12 days. A, B & C together can finish it in 6 days. A & C together will do it in :
সমাধান
সঠিক উত্তর: Option C
in 1 day,
A + B = 1/8
B + C = 1/12
A + B + C = 1/6
Only A does in 1 day = (1/6 - 1/12) = 1/12
Only B does in 1 day = (1/8 - 1/12) = 1/24
Only C does in 1 day = (1/12- 1/24) = 1/24
So Both A & C do in 1 day = (1/12 + 1/24) = 3/24 = 1/8
So they complete the job in 8 days
