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Chain Rule Unitary Method Question Answer

Chain Rule or Unitary Method is one of the important topic for the bank officer Exam, IBPS Bank PO, Clerk, RRB, Specialist officer Examination, and other Competitive examination. brought Chain Rule MCQ question answer which will be helpful in the preparation of Quantitative Aptitude section of Banking, RBI, and other Insurance company examination. We have published the chain rule Problem with Numerical solutions.  You can posts your feedback on following aptitude questions and you can also posts chain rule questions for practices of other candidates.
Q1. If 36 men can do a piece of work in 25 days, in how many days will 15 men do it?
(a) 20 days      (b) 40 days     (c) 60 days         (d) 80 days

Q2. If 20 men can built a wall 112 m in 6 days. What length of a similar wall can be built by 25 men in 3 days?
(a) 30 m      (b) 45 m     (c) 60 m         (d) 70 m

Q3. If 8 men working 9 hours a day can built a wall 18 m long, 2 m broad and 12 m high in 10 days, how many men will be required to built a wall 32 m long, 3 m broad and 9 m high by working 6 hours a day, in 8 days?
(a) 10      (b) 20      (c) 30         (d) 40

Q4. 5 men or 9 women can do a piece of work in 19 days, in how many days will 3 men and 6 women do it?
(a) 10 days      (b) 15 days     (c) 20 days         (d) 25 days

Q5. 8 women can complete a work in days and 10 children take 16 days to complete the same work. How many days will 10 women and 12 children take to complete the work?
(a) 2 days      (b) 3days     (c) 4days         (d) 5 days
Q6. If 22.5 m of a uniform rod weighs 85.5 kg. What will be the weight of 8 m of the same rod?
(a) 22.8 kg      (b) 25.6 kg     (c) 26.5 kg         (d) 280 days

Q7. 6 dozen eggs are bought for Rs 48. How much 132 eggs cost?
(a) Rs 78      (b) Rs 80     (c) Rs 82         (d) Rs 88

Q8. A garrison of 500 men had provisions for 24 days. However a reinforcement of 300 men arrived. The food will now last for:
(a) 18 days       (b) 17 1/2 days     (c) 16 days         (d) 15 days

Q9. A worker makes a toy every 2/3 hour. If he works for 7 1/2 hours then how many toys will he make?
(a) 11 1/4      (b) 11 3/4     (c) 13 1/4         (d) 13 3/4

Q10. If 4/5th of a cistern is fill in 1 minute, how much more time will be required to fill the rest of it?
(a) 20 seconds       (b) 15 seconds      (c) 12 seconds          (d) 10 seconds

Q11. A tree 6 m tall cast a 4 m shadow. At the same time, a flagpole casts a 50 m long shadow. How long is the flagpole?   
(a) 50 m       (b) 75 m      (c) 33 1/3         (d) none of these

Q12. The Qutub Minar casts a shadow 150 m long, at the same time when the Vikas Minar casts a shadow 120 m long on the ground. If the height of the Vikas Minar is 80 m, what is the height of the Qutub Minar?
(a) 100 m      (b) 120 m     (c) 150 m         (d) 180 m

Q13. 3 men or 5 women can finish a piece of work in 12 days. How long will 6 men and 5 women take to finish the work?
(a) 4 days      (b) 10 days      (c) 15 days          (d) 20 days

Q14. 20 men complete one – third of a piece of work in 14 days. How many more men should be employed to finish the rest of work in 25 more days?
(a) 10      (b) 12     (c) 15         (d) 20

Q15. 10 Pipes of the same diameter can fill a tank in 24 minutes. If two pipes go out of order, how long will the remaining pipes take to fill the
(a) 40 minutes      (b) 45 minutes     (c) 30 minutes         (d) 19 1/5 minutes

Q16. 8 men can complete a piece of work in 12 days. 4 women can complete it in 48 days and 10 children can complete the same piece of work in 24 days. In how many days can 10 men, 4 women and 10 children complete the same piece of work?
(a) 5 days       (b) 15 days      (c) 28 days          (d) 6 days     (e) none of these

Q17. 8 men and 12 children can do a piece of work in 9 days. A child takes double the time to do a work than the man. In how many days 12 men can complete the work?
(a) 10 1/2 days       (b) 14 days      (c) 18 days          (d) 13 1/2 days

Q18. 25 men can reap a field in 20 days. When should 15 men leave the work if the whole field is to be reaped in 37 1/2 days after they leave the work?
(a) after 3 days       (b) after 4 days     (c) after 5 days          (d) after 6 days

Q19. A man and a boy working together can complete a work in 24 days.  If for the last 6 days man alone does the work, then it is completed in 26 days. How long will the boy take to complete the work alone?
(a) 72 days       (b) 20 days      (c) 24 days         (d) 36 days

Q20. Two persons can complete a piece of work in 9 days. How many more persons are needed to complete double the work in 12 days?
(a) 1      (b) 2     (c) 3         (d) 4

Q21. If a job takes 12 workers 4 hours to complete, how long should it take 15 workers to complete the job?
(a) 2 hours 40 min     (b) 3 hours      (c) 3 hours 12 min         (d) 3 hours 24 min             (e) 3 hours 30 min

Q22. 40 men take 8 days to earn Rs 2000. How many men will earn Rs. 200 in 2 days?
(a) 10      (b) 12     (c) 14         (d) 20                (e) none of these

Q23. A garrison of 3300 men had provisions for 32 days, when given at the rate of 850 gm per head. At the end of 7 days, a reinforcement arrived and it was found that the provisions would last 17 days more, when given at the rate of 825 gm per head. What was the strength of the reinforcement?
(a) 1500      (b) 1600     (c) 1700         (d) 1800

Q24. Four examiners can examine a certain number of answer papers in 10 days by working for 5 hours a day. For how many hours in a day would 2 examiners have to work in order to examine twice the number of answer papers in 20 days?
(a) 7 1/2 hours       (b) 8 hours      (c) 8 1/2 hours          (d) 10 hours
(e) none of these

Q25. 8 men working for 9 hours a day complete a piece of work in 20 days. In how many days can 7 men working for 10 hours a day complete the same piece of work?
(a) 20 1/2 days       (b) 20 3/5 days      (c) 21 days          (d) 21 3/7 days
(e) none of these

Q26. 400 persons working 9hours per day complete 1/4th of the work in 10 days. The number of additional persons, working 8 hours per day required to complete the remaining work in 20 days, is:
(a) 225      (b) 250     (c) 275         (d) 675

Q27. If 5 spiders can catch 5 flies in 5 minutes, how many flies can 100 spiders catch in 100 minutes?
(a) 100      (b) 500     (c) 1000         (d) 2000

Q28. If 3 persons weave 336 shawls in 14 days. How many shawls will 8 persons weave in 5 days?
(a) 180       (b) 210     (c) 252         (d) 320

Q29. If 42 persons consume 144 kg of rice in 15 days, then in how many days will 30 persons consume 48 kg of rice?
(a) 6 days      (b) 7 days     (c) 8 days         (d) 12 days

Q30. In a hospital, there is a consumption of 1350 liters of milk for 70 patients for 30 days. How many patients will consume 1710 liters of milk in 28 days?
(a) 59      (b) 85     (c) 95         (d) 105

Q31. If 18 binders bind 9000 books in 10 days, how many binders will be required to bind 6600 books in 12 days?
(a) 55      (b) 14     (c) 13          (d) 11

Q32. If 18 pumps can raise 2170 tonnes of water in 10 days, working 7 hours per day, In how many days will 16 pumps raise 1736 tonnes, working 9 hours per day?
(a) 9 days       (b) 8 days      (c) 7 days         (d) 6 days

Q33. If 5 engines consume 6 metric tones of coal when each is running 9 hours per day. How much coal will be needed for 8 engines, each running 10 hours a day. It being given that 3 engines of former type consume as much as 4 engines of latter type?
(a) 9 metric tones       (b) 8 8/9 metric tones      (c) 3 1/8 metric tones          (d) 6 12/25 metric tones

Q34. A contractor employed 30 men to do a piece of work in 38 days. After 25 days, he employed 5 men more and the work was finished one day earlier. How many days, he would have been behind, if he had not employed additional men?
(a) 1 days       (b) 1 1/4 days      (c) 1 1/2 days         (d) 1 3/4 days
Q35. A contractor undertook to do a certain piece of work in 9 days. He employed a certain number of labors. But, 6 of them being absent from the very first day, the rest could finish the work in 15 days. The number of men 
Originally employed were:
(a) 12       (b) 15      (c) 18         (d) 24

Q36. A contractor undertakes to do a piece of work in 40 days. He engages 100 men at the beginning and 100 more after 35 days and completes the work in stipulated time. If he had not engaged the additional men, how many days behind schedule would it be finished?
(a) 9        (b) 5      (c) 3         (d) 6 days
Q37. 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



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