A can complete a job in 20 hours. B alone can complete the same job in 15 hrs. A work for 9 hrs and then the remaining job is completed by B. How many hours will B be alone take to complete the remaining job?

The part of job that A completes in 9 hours = 9/20 Remaining job =1 - 9/20 = 11/20 Remaining job can be done by B in 11/20*15 = 33/4 = 8*1/4hrs

- ‘A’ alone can complete a work in 50 days while ‘A’ and ‘B’ together can complete the same work in 20 days. How much percentage of the work, ‘B’ alone can complete in 25 days?
- Vijay can do a piece of work in 16 days and Sanjay can do the same work in 24 days. If Vijay works for 6 days and got Rs. 2700, and the remaining work will completed by Sanjay, then how much rupee Sanjay earned?
- ‘A’ can do a piece of work in 8 days. ‘B’ can do 40% of the same work in 16 days. If they work together for the entire time and get paid Rs.1500, then find the share of ‘A’.
- Anil can do a piece of work in 25 days. He alone worked at it for 10 days and then Sunil completed alone the rest work in 15 days. In how many days, they will complete the whole work, working together?
- P and Q can do a piece of work in 32 and 40 days respectively. They began to work together but P leaves after sometimes and Q completed remaining work in 16 days. After how many days did P leaves (in days)?
- P alone can finish a piece of work ‘M’ in 6 days while Q takes 3 days to finish it alone. P, Q and R working together can finish the work ‘N’ which is 6 times of work ‘M’ in 6 days. How long will R take to finish work ‘N’, when working alone?
- A can do a piece of work in 12 days, while B alone can do it in 18 days. They work together for 6 days and the rest of the work is completed by C in 4 days. If they get Rs. 720 for the whole work, how should they divide the money?
- P and Q individually can complete the work in 36 days and 54 days respectively. If the time taken by R alone to complete the work is 1.25 times the time taken by P and Q together to complete the work, find the time taken by R to complete the work while working alone.
- Karan, Arjun and Krunal alone can complete a work in 20, 30 and 24 days respectively. All of them started working together but after 3 days from start Karan left the job and after 5 more days Arjun also left the job. So for how many days did Krunal work?
- 15 men can complete a piece of work in 5 days, while 20 women can complete it in 5 days. 8 men start working on the job & after working for 3 days, all of them stopped working. How many women should be put on the job to complete the remaining work in 4 days?

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