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- Question
A and B together do a job in 15 days and A alone could do the same job in 20 days. How many days would B take to do half the job if he worked alone?
Options- A. 60
- B. 30
- C. 45
- D. 40
- Correct Answer
- 30
- 1. A can do a piece of work in 20 days and B in 15 days. With help of C, they finish the work in 5 days. C can alone do the work in
Options- A. 5 days
- B. 6 days
- C. 10 days
- D. 12 days Discuss
- 2. A can finish a work in 7 days . B can finish the same work in 9 days . The days required to finish the work by both of them together.
Options- A. 31/16
- B. 47/16
- C. 63/16
- D. 79/16 Discuss
- 3. M is thrice as good as workman as N and together they finish a piece of work in 30 days. In how many days will M alone finish the work?
Options- A. 50
- B. 40
- C. 60
- D. 45 Discuss
- 4. A can do a work in 20 days and B in 10 days. If they work on it together for 5 days, then what fraction of work is left.
Options- A. 4/9
- B. 1/4
- C. 1/5
- D. 2/9 Discuss
- 5. A does 80% of a work in 20 days. He then calls in B and they together finish the remaining work in 4 days. How long B alone would take to do the whole work?
Options- A. 12.5 days
- B. 100 days
- C. 22.5 days
- D. 35 days Discuss
- 6. X, Y and Z can do a piece of work in 30, 40 and 50 days respectively. All three of them began the work together but Y left 4 days before completion of the work. In how many days was the work completed?
Options- A. 660/47
- B. 640/47
- C. 680/47
- D. 665/47 Discuss
- 7. A,B and C contract a work for Rs. 440. Together A and B are to do 9/11 of the work. The share of C should be:
Options- A. 75
- B. 90
- C. 100
- D. 80 Discuss
- 8. A can do a piece of work in 18 days. He worked at it for 12 days and B finished the remaining work in 8 days. B alone can do the whole work in
Options- A. 16 days
- B. 24 days
- C. 28 days
- D. 29 days Discuss
- 9. A and B can together do a piece of work in 6 days and A alone can do it in 9 days. The number of days B will take to do it alone is
Options- A. 18 days
- B. 24 days
- C. 9 days
- D. 12 days Discuss
- 10. A is twice as good as B and together they finish a piece of work in 16 days. The number of days taken by A alone to finish the work is
Options- A. 20 days
- B. 21 days
- C. 22 days
- D. 24 days Discuss
Time and Work problems
Search Results
Correct Answer: 12 days
Correct Answer: 63/16
Correct Answer: 40
Correct Answer: 1/4
Correct Answer: 100 days
Correct Answer: 660/47
Correct Answer: 80
Correct Answer: 24 days
Correct Answer: 18 days
Correct Answer: 24 days
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