Question
A and B together can complete a piece of work in 10 days. A alone can complete it in 15 days. In how many days can B alone complete the work?
Solution
(A + B)’s 1-day work = 1/10 A’s 1-day work = 1/15 B’s 1-day work = 1/10 − 1/15 = (3 − 2) / 30 = 1/30 So B alone will take 30 days. Answer: 30 days
More Time and work Questions
- A and B can do a piece of work in 30 days and 40 days, respectively. They began the work together but after a certain time, A leaves off and B completed th...
- Rahul, Sameer, and Dinesh can complete a task in 24 days, 36 days, and 18 days, respectively. They started working together, but Rahul left after 3 days. H...
- ‘A’ alone can complete a work in 50 hours. ‘A’ started the work alone and left after working on it for 30 hours. If ‘B’ completed the rest of the work in 2...
- 132 unit of work can be completed by P alone in 22 days. P started working alone and joined by Q after 10 days such that they completed the remaining work ...
- ‘A’ alone can complete a work in 50 hours. ‘A’ started the work alone and left after working on it for 10 hours. If ‘B’ completed the rest of the work in 1...
- 5 men and 6 women can do some work in 3 days. If each man is 50% more efficient than a woman, then find the time taken by 9 men to finish the same work tog...
- ‘M’ alone can complete a work in 18 days. ‘N’ is 50% as efficient as ‘M’. How long will they take to complete the work together?
- With a bucket full of water, a tank can be filled with 16 buckets. When each bucket holds 12.5 liters of water, how many buckets of 10-liter capacity can b...
- Choose the statements that correctly show two workers taking 6 hours and 9 hours to complete a task, respectively.
- The ratio of the efficiency of A, B and C is 3:4:5, if they can complete a work in 18 days then A can complete 60% of the work in how many days?
Relevant for Exams:
