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If Arif works alone he will take 20 more hours to complete a task than if he works with Babu to complete the task. If Babu work alone, he will take 5 more hours to complete the task than if he works with Arif to complete the task. What is the ratio of the time taken by Arif to than taken by Babu if each of them works alone to complete the task?
Ravi and Kamal together can complete a task in 60 days, they start work together and after 46 days Kamal left the task and whole task completes in 66 days. Find the days in which Kamal alone can complete 60% of whole task? 
A and B together can complete a task in 40 days. B and C together can complete the same task in 50 days. A and C together can complete the same task in 60 days. What is the respective ratio of the number of days taken by A when completing the same task alone to the number of days taken by C when completing the same task alone?
A and B together can complete a task in 20 days. B and C together can complete the same task in 25 days. A and C together can complete the same task in 30 days. What is the respective ratio of the number of days taken by A when completing the same task alone to the number of days taken by C when completing the same task alone?
A, B and C can together complete a work in 20 days. On the other hand, B and C can together complete the work in 30 days, while C can complete the work alone in 50 days. If A left when the work was 20% complete, while B left when the work was 50% complete, and C completed rest of the work alone, in how many days will the work be complete?
A and B together can complete a work in 15 days, B and C together can complete the whole work in 12 days and C alone can complete the whole work in 30 days. In how many days A alone can complete the whole work?
Given below are two quantities named A and B. Based on the given information, you have to determine the relation between the two quantities. You should use the given data and your knowledge of Mathematics to choose between the possible answers. Quantity A: M and N can complete the work in 10 and 20 days respectively. They started doing work together but after 4 days M left the work. In what time N can complete the remaining work? Quantity B: A and B can together complete the work in 12 days. A alone can complete the work in 30 days. If B works for first 4 days alone and then A joins the work, in how many days remaining work will be complete?
A can complete 25% of a task in 10 days. B can complete 40% of the task in 40 days and C can complete \(\frac{1}{3}\) of the task in 13 days. Who among them has the fastest speed to complete the same task?
A and B can complete a task in 12 days, B and C can complete the task in 16 days, A and C can complete the task in 24 days. In how many days will they together complete the task?
A can complete a task alone in 9 days while B takes 13.5 days to do it by herself. Together with C it takes them 4.5 days to complete the task. If C and D together can complete the task in 18 days, then how many days will D need to complete the task by herself?