Time and Work problems
- 1. If A, B and C can do a job working alone in 12, 18 and 36 days respectively. They all work together for 2 day, then B quits. How many days will A and C take to finish rest of the job?
Options- A. 9
- B. 6
- C. 3
- D. 4 Also asked in: Bank Exams
Correct Answer: 6
- 2. If A, B and C together do a job in 4 days, A and C together do the job in 4.5 days and B and C together do the job in 12 days then in how many days can C alone do the job?
Options- A. 36
- B. 6
- C. 18
- D. 12 Also asked in: Bank Exams
Correct Answer: 18
- 3. P and Q can do a project in 20 and 12 days respectively. In how many days can they complete 40% of the project if they work together?
Options- A. 1.5 days
- B. 3 days
- C. 6 days
- D. 9 days Also asked in: Bank Exams
Correct Answer: 6 days
- 4. 12 men complete a work in 14 days. 5 days after they had started working, 3 men join them. How many more days will all of them take to complete the remaining work?
Options- A. 5
- B. 4
- C. 3
- D. 2 Also asked in: AIEEE, Bank Exams, CAT, GATE, GRE, Analyst, Bank Clerk, Bank PO
Correct Answer: 3
Explanation:
Let p be the required number of days.
From the given data,
12 x 14 = 12 x 5 + (12+3) x p
12 x 14 = 12[5 + 3p]
14 = 5 + 3p
3p = 9
p = 3 days.
Hence, more 3 days all of them take to complete the remaining work.
- 5. Working 10 hours a day, Aman can complete a piece of work in 18 days. How many hours a day should he work so as to finish the work in 15 days?
Options- A. 10
- B. 12
- C. 16
- D. 18 Also asked in: Bank Exams
Correct Answer: 12
- 6. Robin can do a work in 10 hours. Pradeep and Robin together can do the same work in 4 hours. Pradeep and Nitin together can do the samework in 5 hours. In how many hours Nitin alone can complete the same work?
Options- A. 12
- B. 15
- C. 18
- D. 20 Discuss
Correct Answer: 20
- 7. S, T and U can complete a work in 40, 48 and 60 days respectively. They received Rs 10800 to complete the work. They begin the work together but Tleft 2 days before the completion of the work and U left 5 days before the completion of the work. S has completed the remaining work alone. What is the share of S(in Rs) from total money?
Options- A. 4320
- B. 4500
- C. 4860
- D. 4960 Also asked in: Bank Exams
Correct Answer: 4860
- 8. Ram and Hari can cut 12 kgs nuts in 2 days. After 5 days, Hari left the work. Ram took 8 more days to cut the rest of the nuts. If total of 58 kgs of nuts were cut, the time taken by Hari to cut 10 kg of nuts is
Options- A. 1 day
- B. 2 days
- C. 3 days
- D. 4 days Discuss
Correct Answer: 4 days
- 9. Pannalal has done 1/3rd of a job in 20 days, Saiprasad completes the rest of the job in 10 days. In how many days can they together do the job?
Options- A. 12 days
- B. 6 days
- C. 3 days
- D. 24 days Also asked in: AIEEE, Bank Exams, CAT
Correct Answer: 12 days
- 10. P and Q can do a project in 6 and 12 days respectively. In how many days can they complete 25% of the project if they work together?
Options- A. 2 days
- B. 4 days
- C. 1 days
- D. 8 days Also asked in: Bank Exams
Correct Answer: 1 days
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