Answer with Explanation:
(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.
Therefore 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 + 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.
Therefore 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.