Chain rule problems - chain rule aptitude questions

Chain Rule Problems and Chain Rule Aptitude Questions with Answers:

17. 36 men can complete a piece of work in 18 days. In how many days will 27 men complete the same work?

(A) 14

(B) 16

(C) 22

(D) 24

(E) None of these

18. A wheel that has 6 cogs is meshed with a larger wheel of 14 cogs. When the smaller wheel has made 21 revolutions, then the number of revolutions made by the larger wheel is :

(A) 8

(B) 9

(C) 40

(D) 48

19. The cost of 16 packets of salt, each weight 900 grams is Rs. 28. What will be the cost of 27 packets, if each packet weight 1 kg?

(A) Rs.52.50

(B) Rs.56

(C) Rs. 60

(D) Rs. 65.25

(E) None of these

20. Running at the same constant rate 6 identical machines can produce a total of 270 bottles per minute. At this rate, how many bottles could 10 such machines produce in 4 minutes?

(A) 848

(B) 1800

(C) 3500

(D) 10800

21. 10 men, working 6 hours a day can complete a work in 18 days. How many hours a day must 15 men work to complete the same work in 12 days?

(A) 6

(B) 12

(C) 18

(D) 24

22. 3 pumps, working 8 hours a day, can empty a tank in 2 days. How many hours a day must 4 pumps work to empty the tank in 1 day?

(A) 6

(B) 8

(C) 10

(D) 12

23. If 7 spiders make 7 webs in 7 days, then 1 spider will make 1 webs in how many days?

(A) 1

(B) 8

(C) 7

(D) 49

24. 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) 6

(B) 12

(C) 17

(D) 18

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