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- Question
A can do 1/2 of a piece of work in 8 days while B can do1/3of the same work in 8 days. In how many days can both do it together?
Options- A. 9.6 days
- B. 10.5 days
- C. 11.2 days
- D. 16 days
- Correct Answer
- 9.6 days
ExplanationA completed their work in 8 X 2 = 16 days
B completed their work in 8 X 3 = 24 days
A and B one day work1/16 + 1/245/48
A and B completed their work in 48/5 days = 9.6 days
- 1. Ehsaan is twice as good a worker as Kamal and together they finish a piece of work in 29 days. In how many days will Kamal, working alone, finish the work?
Options- A. 58
- B. 70
- C. 87
- D. 116 Discuss
- 2. A and B can do a piece of work in 24 and 30 daysrespectively. Both started the work and worked for 6 days.Then B leaves the work and C joins and the remaining workis completed by A and C together in 11 days. Find the days in which C alone can do the work
Options- A. 80
- B. 100
- C. 120
- D. 130 Discuss
- 3. 8 men can complete a work in 16 days. 16 women can complete the same work in 24 days. In how many days can 4 men and 8 women complete the same work?
Options- A. A)
- B. B)
- C. C)
- D. D) Discuss
- 4. Pankaj has done 1/2 of a job in 12 days, Sainath completes the rest of the job in 6 days. In how many days can they together do the job?
Options- A. 4 days
- B. 12 days
- C. 8 days
- D. 16 days Discuss
- 5. A can do a work in 36 days and B in 12 days. If they work on it together for 3 days, then what fraction of work is left?
Options- A. 2/3
- B. 1/3
- C. 1/4
- D. 1/5 Discuss
- 6. Painter A can paint a house in 40 days and Painter B can do it in 60 days. With help of C, they did the job in 20 days only. Then, C alone can do the job in
Options- A. 120 days
- B. 100 days
- C. 90 days
- D. 80 days Discuss
- 7. Rohan and Mohit together can build a wall in 8 days. Mohit and Vikas build the same wall in 10 days and Vikas and Rohan can build the same wall in 12days. In how many days can all the three complete the same wall while working together?
Options- A. 240/37
- B. 120/37
- C. 150/37
- D. 180/37 Discuss
- 8. X can complete a task in 8 days, whereas Y can complete the same task in 10 days. If they work together, in how many days will the task be completed?
Options- A. 40/9
- B. 9/40
- C. 44/9
- D. 9/44 Discuss
- 9. If two flood gates A and B function simultaneously, the reservoir will be filled iu 6 hours. Gate A fills the reservoir 5 hours faster than gate B. How many hours does the faster flood gate take to fill the reservoir?
Options- A. 7 hrs
- B. 13 hrs
- C. 5 hrs
- D. 10 hrs Discuss
- 10. A alone can do a work in 20 days. B is 125% more efficient than A. A and B started working and worked for 4 days. If C alone completed the remaining job in 22 days. How many days C alone takes to complete the entire job?
Options- A. 30
- B. 35
- C. 40
- D. 42 Discuss
Time and Work problems
Search Results
Correct Answer: 87
Correct Answer: 120
Explanation:
(1/24 + 1/30) x 6 + (1/24 + 1/C) x 11 = 1
Correct Answer:
Correct Answer: 8 days
Correct Answer: 2/3
Correct Answer: 120 days
Correct Answer: 240/37
Correct Answer: 40/9
Correct Answer: 10 hrs
Correct Answer: 40
Explanation:
A alone can do = 20days
Efficiency ratio of A & B= 4 : 5
Time required will be in ratio = 5:4
B alone will do it in =16 days
LCM of (16,20)= 80 ,
Assume work size of 80 units
1 day work of A= 4 units 1 day work of B= 5 units
Work done by both in 4 days= 4*(5+4)= 36 units
Work left= 80-36= 44 units
Now C takes 22 days to complete= 44 units.
Time taken by C alone to complete the work= 40 days
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