" 8."6" pipes fill a tank in "120" minutes,then "5" pipes will fill it in "

6 pipes fill tank in 120 minutes, then 5 pipes will it in

If 5 pipes can fill a tank in 144 minutes , then 6 pipes can fill it in ................. minutes .

6 pipes can fill a tank in 24 minutes. One pipe can fill in

If 10 pipes of the same diameter can fill a tank in 24 minutes.then 8 pipes would fill in 19 min 20 sec.

If one pipe A can fill a tank in 20 minutes, then 5 pipes, each of 20% efficiency of A, can fill the tank in :

Pipe A can fill a tank in 20 minutes and pipe B can fill the tank in 30 minutes. Both the pipes can fill at the rate of 8 liters per second. What is the capcity of the tank (in litress) ?

A pipe can fill a tank in 10 minutes while another pipe can empty it in 12 minutes. If the pipes are opened alternately each for 1 minute, beginning with the first pipe. the tank will be full after (in minutes):