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 days 5
b. 9 2 days 5
c. 9 3 days 5
d. 10 [#
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Answer:
9 3/5 days
Step-by-step explanation:
Given 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 + B + C will do the work = 1/4
A will do in one day's work in 1/16
B will do in one day's work in 1/12
So C will do work in 1/4 - (1/16 + 1/12)
= 1/4 - 3+4/48
= 1/4 - 7/48
= 5/48
So C can do the work in 48/5 = 9 3/5 days.
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