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- A can lay railway track between two given stations in 16 days and B can do the same job in 12 days.
Question 1:
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: A. 9+(1/5)days
B. 9+(2/5)days
C. 9+(3/5)days
Feedback (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 = 1/4 - (1/16 + 1/12 )= ( 1/4 - 7/48) = 5/48
So, C alone can do the work in 48/5 = 9(3/5) days
A's 1 day's work =1/16
B's 1 day's work =1/12
C's 1 day's work = 1/4 - (1/16 + 1/12 )= ( 1/4 - 7/48) = 5/48
So, C alone can do the work in 48/5 = 9(3/5) days
D. 9+(4/5)days
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