engineering recuitment NMDC Maintenance Assistant Fitter 2021 Mock Test Quantitative Aptitude Time and Work
Mr Yis 7 times efficient than Mr.Z and Mr.Y can finish a work in 7days, then how many days they take to complete the work, if both works together?
1
25/6 days
2
12/7 days
3
49/8 days
4
13/5 days