Question

A can lay railway track between two given stations in 16 days and B can do the same job in 12 days. With help of C, they did the job in 4 days only. Then, C alone can do the job in:

Answer 1

(A + B + C)'s 1 day's work =1,4

A's 1 day's work =1,16

B's 1 day's work =1.12

 C's 1 day's work =1-1+1=1-7=5.4161244848

So, C alone can do the work in48= 93days

Answer 2

hola!! ^_^

your answer is - -

(A+B+C) 1 days work= 1, 4

As 1 day work=1/16

Bs 1 day work=1/14

Cs 1 day work=5.41

so, c alone can do in 93 days