defence exam CISF Head Constable Ministerial (HCM) & ASI Steno Mock Test Series Quantitative Aptitude Time and Work Work Efficiency
30 men can complete a piece of work in 24 days. 12 days after they started working together, 10 more men joined them. How many days will they now take to complete then remaining work?
1
12 days
2
8 days
3
10 days
4
9 days