Rate upstream = 15 – 13 = 2 kmph Rate downstream = 15 + 13 = 28 kmph Time taken to go upstream = 56/2 = 28 hr Time taken to go downstream = 56/28 = 2 hr Total time = 28 + 2 = 30 hrs
Ram and Shyam are partners in completing a project. Ram can finish the project in 42 days, while Shyam can complete it in 54 days. Both began the projec...
Anita started working and left after 3 days and aftere that Binita started the rest work and finished it in another 5 days. Had Anita left the work afte...
‘A’ alone can do some work in 25 days. ‘B’ and ‘C’ together can do the same work in 10 days. If ‘B’ is half as efficient as ‘A’, the...
A team of 16 men works 9 hours a day and completes a task in 40 days. If the goal is to finish the same task in 30 days, with each man working 8 hours ...
‘A’ and ‘B’ can complete a certain work in 13 days and 26 days, respectively. They started working together and worked till completion of the wo...
The efficiency of C is 20% more than the efficiency of D. D alone can complete a piece of work in (y-2) days. The time taken by C alone to complete the ...
Ravi and Manish can do a piece of work in 16 days and 20 days respectively. How long will it take to finish the work if Manish is to be replaced by Sanj...
Pipes ‘A’ and ‘B’ can fill a tank in 9 hours and 12 hours, respectively. If pipe ‘C’ is opened along with pipes ‘A’ and ‘B’, then th...
A can complete a work in 30 days. B takes 6 days less than A to complete the same work. In how many days can both of them together complete 90% of the w...
A alone can complete 50% of a work in 9 days while B takes 6 days more than A to complete it. If B and C together can complete the work in 12 days, then...
