SSC NTA Delhi University Non-Teaching 2021 Mock Test Quantitative Aptitude Time and Work Work Efficiency
X takes 4 days to complete one-third of a piece of work; Y takes 3 days to complete one-sixth of the same work, and Z takes 5 days to complete half of the work. If all the three work together for 3 days and X and Z quit, how long will it take for Y to complete the remaining task alone?
1
6 days
2
7 days
3
8.1 days
4
5.1 days