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- Question
Amar is 2 times as good a workman as Badal and therefore is able to finish a job in 15 days less than Badal. In how many days can they together complete the job?
Options- A. 30 days
- B. 40 days
- C. 10 days
- D. 20 days
- Correct Answer
- 10 days
- 1. 2 men or 3 women can complete a job in 96 days. Then 6 men and 7 women will complete the same job in how many days?
Options- A. 18
- B. 27
- C. 20
- D. 24 Discuss
- 2. A can do a certain job in 12 days. B is 60% more efficient than A. Then B can do the same piece of work in
Options- A. 8 days
- B. 7.5 days
- C. 6.4 days
- D. 5.5 days Discuss
- 3. A and B can complete a task in 1.5 days. However, A had to leave a few days before the task wascompleted and hence it took 2 days in all to complete the task. If A alone could complete the work in2.625 days, how many days before the work getting over did A leave?
Options- A. 1.125
- B. 0.625
- C. 0.375
- D. 0.875 Discuss
- 4. 70000 a year is how much an hour?
Options- A. 80
- B. 8
- C. 0.8
- D. 0.08 Discuss
- 5. M, N and O can complete the work in 18, 36 and 54 days respectively. M started the work and worked for 8 days, then N and O joined him and they all worked together for some days. M left the job one day before completion of work. For how many days they all worked together?
Options- A. 4
- B. 5
- C. 3
- D. 6 Discuss
- 6. A does 75% of a work in 25 days. He then calls in B and they together finish the remaining work in 5 days. How long B alone would take to do the whole work?
Options- A. 50 days
- B. 80 days
- C. 24 days
- D. 37.5 days Discuss
- 7. A & B together finish a job in 24 days, while A, B & C together can finish the same job in 8 days. C alone will finish the job in
Options- A. 12 days
- B. 14 days
- C. 16 days
- D. 24 days Discuss
- 8. 12 men complete a work in 9 days. After they have worked for 6 days, 6 more men join them. How many days will they take to complete the remaining work?
Options- A. 2
- B. 3
- C. 4
- D. 5 Discuss
- 9. A can do 75% of a job in 9 days and B can do half of the job in 8 days. If they work on it together, then in how many days can they do half of the job?
Options- A. 40/7
- B. 24/7
- C. 7/2
- D. 9/2 Discuss
- 10. A,B and C together can finish a task in 7.5 days. C is thrice as productive as A and B alone can do the task in 15 days. In how many days can A and C do the job if B goes on leave?
Options- A. 30
- B. 10
- C. 20
- D. 15 Discuss
Time and Work problems
Search Results
Correct Answer: 18
Correct Answer: 7.5 days
Correct Answer: 0.875
Correct Answer: 8
Explanation:
Given for year = 70000
=> 365 days = 70000
=> 365 x 24 hours = 70000
=> 1 hour = ?
70000/365x24 = 7.990 = 8
Correct Answer: 5
Explanation:
Let M, N and O worked together for x days.
From the given data,
M alone worked for 8 days
M,N,O worked for x days
N, O worked for 1 day
But given that
M alone can complete the work in 18 days
N alone can complete the work in 36 days
O alone can complete the work in 54 days
The total work can be the LCM of 18, 6, 54 = 108 units
M's 1 day work = 108/18 = 6 units
N's 1 day work = 108/36 = 3 units
O's 1 day work = 108/54 = 2 units
Now, the equation is
8 x 6 + 11x + 5 x 1 = 108
48 + 11x + 5 = 108
11x = 103 - 48
11x = 55
x = 5 days.
Hence, all M,N and O together worked for 5 days.
Correct Answer: 50 days
Correct Answer: 12 days
Correct Answer: 2
Correct Answer: 24/7
Correct Answer: 15
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