Chain Rule - Questions and Answers

6. 120 men had provisions for 200 days. After 5 days, 30 men died due to an epidemic. The remaining food will last for ?

7. If 9 men working 7 hours a day can finish a work in 20 days; then how many days will be taken by 12 men, working 6 hours a day to finish the work; it being given that 3 men of latter type work as much as 2 men of the former type in the same time ?

8. If 18 pumps can raise 2170 tonnes of water in 10 days, working 7 hours a day, in how many days will 16 pumps raise 1736 tonnes, working 9 hours a day ?

9. If 5 men working 6 hours a day can reap 3 field in 20 days, in how many days will 15 men reap the field, working 8 hours a day ?

10. 20 men complete one-third of a piece of work in 20 days. How many more men should be employed to finish the rest of the work in 25 more days ?