Question

A and b can do a piece of work in 10 hours b and c in 12 hours and c and a in 15 hours how long will they take if they wok together?How ling will each take to complete the work independently

Answer 1

Answer:

Step-by-step explanation:

(A + B)’s 1 day’s work = 1/10

(B + C)’s 1 day’s work = 1/12

(C + A)’s 1 day’s work = 1/15

On adding,

2(A + B + C)’s 1 day’s work = 1/10+1/12+1/15=1/4

∴ (A + B + C)’s 1 day’s work = 1/8

∴ A’s 1 day’s work = 1/8-1/12= 1l24

∴ A alone will complete the work in 24 days.

Hope it helps you....