The correct answer is A
Naina and Kalpana working together can do a piece of work in 10 days, whereas Naina alone can do it in 12 days. In how many days can Kalpana do it alone?
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Pipe ‘A’ and pipe ‘B’ can fill a cistern in 20 minutes and 15 minutes respectively. Pipe ‘C’ alone can empty the cistern in 10 minutes. If a...
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A can complete a task in 20 days, and B can complete it in 25 days. When B and C collaborate, they can finish the same task in 75/8 days. Now, if A and ...
P can do a piece of work in 12 days, Q can complete double the work in 20 days and R can do the work in 15 days. If all of them together earn Rs. 2500, ...
