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- Question
A, B and C can complete a work in 10, 12 and 15 days respectively. All three of them starts together but after 2 days A leaves the job and B left the job 3 days before the work was completed. C completed the remaining work alone. In how many days was the total work completed?
Options- A. 5
- B. 6
- C. 7
- D. 8
- Correct Answer
- 7
- 1. A can do a piece of work in 10 days and B in 12 days. With help of C, they finish the work in 4 days. In how many days C alone can do the same work?
Options- A. 12
- B. 15
- C. 18
- D. 24 Discuss
- 2. Amit can complete a work in 25 days and Punit can complete the same work in 20 days. Punit alone worked at it for 10 days and then left the work. In how many days will Amit alone complete the remaining work?
Options- A. 10.5
- B. 11.5
- C. 12.5
- D. 13.5 Discuss
- 3. A can do a work in 8 days, B can do the same work in 10 days and C can do the same work in 12 days. If all three of them do the same work together and they are paid Rs 7400, then what is the share (in Rs) of B?
Options- A. 2600
- B. 3000
- C. 2400
- D. 2000 Discuss
- 4. One tap can fill a water tank in 50 mins and another tap can make the filled tank empty in 75 mins. If both the taps are open together, already half filled tank would be full in
Options- A. 60 min
- B. 75 min
- C. 125 min
- D. 150 min Discuss
- 5. If Data Interpretation and Modern Maths were taught for a combined time of 96 hours, then for how much time (in hours) were Number system and Geometry taught?
Options- A. 136
- B. 184
- C. 216
- D. 232 Discuss
- 6. A and B can together do a piece of work in 10 days. If A works with twice of his efficiency and B works with an efficiency 1/3rd less than his efficiency, then the work gets completed in 6 days. In how many days can A and B do the work alone respectively?
Options- A. 40/3, 40
- B. 20/3, 20
- C. 30, 20/3
- D. 50/3, 25 Discuss
- 7. Amar can complete a work in 30 days and Raman can complete the same work in 15 days. If both of them work together, then in 4 days what percent of the total work will be completed?
Options- A. 15
- B. 37
- C. 40
- D. 45 Discuss
- 8. 45 men or 60 boys can do a piece of work in 20 days. How many days will 15 men and 20 boys take to complete the work?
Options- A. 23
- B. 45
- C. 30
- D. 25 Discuss
- 9. A field can be reaped by 12 men or 18 women in 14 days. In how many days can 8 men and 16 women reap it?
Options- A. 26 days
- B. 24 days
- C. 9 days
- D. 8 days Discuss
- 10. A, B and C can do a job working alone in 12, 16 and 24 days respectively. In how many days they can do the job if they worked together?
Options- A. 16/3
- B. 15/4
- C. 17/3
- D. 19/4 Discuss
Time and Work problems
Search Results
Correct Answer: 15
Correct Answer: 12.5
Correct Answer: 2400
Correct Answer: 75 min
Correct Answer: 232
Correct Answer: 40/3, 40
Correct Answer: 40
Correct Answer: 30
Correct Answer: 9 days
Explanation:
12 men or 18 women can complete in 14 days
8 men and 16 women can complete in how many days
12men = 18 women (Comparing efficiencies)
1men = 18/12 = 1.5 women
8 men and 16 women = 12women + 16 women = 28 women
18 women completes in 14 days
1 woman completes in 14*18 days
28 women completes in (14*18)/28 days = 9 days
Correct Answer: 16/3
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