Question
Pipe A can fill a tank in 20 hours and pipe B in 30 hours.
If both the pipes are opened in an empty tank, how much time will they take to fill it?Solution
Let the capacity of tank be 60 litres (LCM of 20 and 30)Efficiency of 'A' = (60/20) = 3 litres/hourEfficiency of 'B' = (60/30) = 2 litres/hourRequired time = 60 ÷ (3 + 2) = 12 hours
Tap ‘A’ and tap ‘B’ can fill a tank in 45 hours and 35 hours, respectively. If both taps are opened together, then find the time after which tap...
Two pipes A and B can fill a tank in 24 min., and 32 min, respectively. If both the pipes are opened simultaneously, after how much time B should be clo...
Tap A can fill a tank in 20 hours and tap B can emptied it is 25 hours. Tap A starts filling and they opened for 1 hour each alternatively in what time...
A tank can be filled by a tap in 10 minutes and by another tap in 30 minutes. Both the taps are kept open for 5 minutes and then the first tap is shut o...
Pipe ‘A’ and pipe ‘B’, together can fill 20% of a tank in 5 hours while pipe ‘C’ takes 30 hours to empty it. Pipe ‘A’ and pipe ‘B’ w...
Pipes A and B can fill an empty tank in 20 hours and 24 hours, respectively, while pipe C can drain the full tank in "x" hours. If all three pipes (A, B...
Two inlet pipes M and N alone can fill a tank in 10 hours and 12 hours respectively and an outlet pipe P alone can empty the whole tank in 5 hours. Firs...
Pipes 'G' and 'H' can fill a tank in 24 hours and 8 hours respectively, while pipe 'I' can empty it in 48 hours. All pipes are opened together when the ...
Pipe A and Pipe B together can fill the tank in 32 hours. The capacity of the pipe A is 25% of the capacity of the pipe B. How much time will pipe B alo...
Pipe ‘A’ can fill a tank in 20 hours while pipe ‘B’ takes 40 hours to empty it. Pipe ‘A’ is opened alone when the tank was empty and after 1...
Relevant for Exams:
