The correct answer is C
A pipe can fill a tank in 14 hours, and B pipe can drain a tank in 21 hours. If a system of N pipes (fill pipes and drain pipes put together) can...
Efficiency of A is 25% more than B and B takes 30 days to complete a piece of work. A started the work alone and then B joined him 4 days before actual ...
A and B together can finish a task in 12 days. B and C together can complete the same task in 20 days. A and C together complete 33(1/3) % of the ta...
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’ wh...
P, Q, and R can complete a work in 12 days. 15 days and 30 days, respectively, working alone. How soon can the work be completed if P is assisted by Q a...
The efficiency of P, Q, R, S are in the ratio of 6:5:4:3. If P and R can do a work together in 6 days. Then How many days Q and S will take to complete ...
A work can be completed by ‘A’ and ‘B’, alone in 12 days and 18 days, respectively. Find the number of days taken by ‘C’ to complete the sam...
P, Q, R and S can do a piece of work in 20 days. If P and Q together can do it in 50 days, and R alone in 60 days, then in how many days can S alone do it?
X can do a piece of work in 25 days. He worked at it for 10 days and then Y finished it in 24 days. In how many days can X and Y together finish the wor...
