A tap can empty a tank in one hour . A second tap can empty it in 30 minutes. If both the taps operate simultaneously, how much time is needed to empty the tank?
20 minute
30 minute
40 minute
45 minute
A and B can do a piece of work in 18 days, B and C in 24 days; A and C in 36 days. In what time can they do it all working together:
16 days
13 days
26 days
12 days
A cistern can be filled by a pipe in 15 hours. But due to a leak in the bottom the cistern is just full in 20 hours. When the cistern is full, the leak can empty it in:
60 hours
40 hours
45 hours
30 hours
A and B can together do a piece of work in 15 days. B alone can do it in 20 days. A alone can do it in
30 days
40 days
45 days
60 days
Two pipes can fill a cistern in 9 hours and 12 hours respectively. In how much time will they fill the cistern when opened together?
2 1/3
5
3 2/3
5 1/7
A and B can do a piece of work in 45 and 40 days respectively. They began to work together but A leaves after sometime and B finished the remaining work in 23 days. After how many days did A leave?
6 days
8 days
9 days
A can finish a work in 18 days and B can do the same work in 15 days. B worked 10 days and left the job. In how many days, A alone can finish the remaining work?
5 1/2
6
8
A tap can fill a cistern in 8 hours and another cn empty it in 16 hours. If both the taps are opened simultaneously, the time (in hours) to fill the tank is
10
16
24
10 women can complete a work in 7 days and 10 children take 14 days to complete the work. How many days will 5 women and 10 children take to complete the work?
3
7
Cannot be determined
Two pipes can fill a tank in 10 hours and 15 hours respectively. Both together can fill it in:
12 1/2 hours
5 hours
6 hours
7 hours
