Chain Rule

Chain Rule Worksheet-4

1. If 9 examiners can examine a certain number of answer books in 12 days, working 5 hours a day; for how many hours a day would 4 examiners have to work in order to examine twice the number of answer books in 30 days?

(a) 6                    (b) 8                    (c) 9                    (d) 10

2. 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?

(a) 10                  (b) 12                  (c) 15                   (d) 20

Chain Rule Worksheet-5

1. In a camp, 95 men had provisions for 200 days. After 5 days, 30 men left the camp. For how many days will the remaining food last now?

(a) 180               (b) 285               (c)           (d) None of these

2. A garrison of 500 men had provisions for 27 days. After 3 days a reinforcement of 300 men arrived. For how many more days will the remaining food last now?

(a) 15                  (b) 16                  (c)               (d) 18