Question

A can complete a work in sometime as b and c togher can do it.If and together can complete the same work in 10 days

Answer 1

(A + B)'s 1 day's work = 1

10

C's 1 day's work = 1

50

(A + B + C)'s 1 day's work = 1 + 1 = 6 = 3 . .... (i)

10 50 50 25

A's 1 day's work = (B + C)'s 1 day's work .... (ii)

From (i) and (ii), we get: 2 x (A's 1 day's work) = 3

25

A's 1 day's work = 3 .

50

B's 1 day's work 1 - 3 = 2 = 1 .

10 50 50 25

So, B alone could do the work in 25 days.