Question
Ram can do a piece of work in 50 days. He alone worked at it for 20 days and then Lakshman completed alone the rest work in 30 days. In how many days, they will complete the whole work, working together?
Solution
Efficiency of Ram = 100/50 = 2% Work done by Ram in 20 days = 20/50 × 100 = 40% Remaining work = 60% Efficiency of Lakshman = 60/30 = 2% Therefore, required number of days = 100/(2+2) = 100/4 = 25 days
More Time and work Questions
- Arjun and Sameer can complete a job in 20 days and 25 days respectively. When Arjun, Sameer, and Nikhil work together, they finish it in . If they receive ...
- 180 unit of work can be completed by P alone in 30 days. P started working alone and joined by Q after 18 days such that they completed the remaining work ...
- Ajay and Vijay can finish a task in 9 days working together. Charu, who is twice as efficient as Vijay, can complete the task alone in 18 days. If Ajay and...
- ‘A’ alone can complete a work in 10 days. ‘B’ alone can complete the same work in 20 days. If ‘A’ and ‘B’ work together for 3 days, then the remaining work...
- Deepak and Divya, alone can complete a work in 18 days and 27 days, respectively. They started the work together and left after 9 days such that the remain...
- Sohan completes half the work done by Ramesh in 3/4 of the time. If they together can complete the work in 20 days, how much time will Ramesh take to compl...
- 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 w...
- P and Q agreed to complete a task for Rs. 6600. P can finish the work alone in 12 days, and Q can complete it alone in 10 days. If they work together, what...
- 'Manoj' can complete some work alone in 40 days. 'Sohan' is twice as efficient as 'Rohan' and five times as efficient as 'Manoj'. If 'Manoj' and 'Rohan' st...
- The time taken by ‘A’ to complete a task is 6 days more than the time taken by A and B together. If A is twice as efficient as B, find the time required by...
Relevant for Exams:
