X can complete one-third of a certain work in 6 days, Y can complete one-third of the same work in 8 days and Z can complete three-fourth of the same work in 12 days. All of them work together for n days and then X and Z quit and Y alone finishes the remaining work in 8 2/3 days. What is n equal to ?
A
3
B
4
C
5
D
6
Correct Answer: Option B
Explanation
First, I need to standardize the data. The question gives partial work times, so I will apply the Unitary Method to find the time for full work, just like in the 2016 PYQ