A pipe can fill a tank in 8 hours. After half of the tank is filled, another pipe is opened which can empty the tank in 12 hours. If both the pipes are opened simultaneously, how long will it take to fill the tank?
Two pipes A and B can fill a tank in 6 hours and 8 hours, respectively. If both pipes are opened together and after 2 hours, pipe B is closed, how long will it take to fill the tank?
A pipe can fill a tank in 15 hours. After every 3 hours, another pipe is opened which can empty the tank in 10 hours. If both the pipes are opened simultaneously, how long will it take to fill the tank?
A tank can be filled by pipe A in 12 hours and by pipe B in 18 hours. If both pipes are opened simultaneously, how long will it take to fill half of the tank?
A cistern can be filled by pipe A in 8 hours and by pipe B in 12 hours. If both pipes are opened simultaneously and after 2 hours, pipe A is closed, how long will it take to fill the cistern?
Two pipes A and B can fill a tank in 12 hours and 16 hours, respectively. If pipe A is opened for the first 2 hours, then closed, and pipe B is opened, how long will it take to fill the tank completely?
A pipe can fill a tank in 6 hours, while another pipe can empty the tank in 8 hours. If both pipes are opened simultaneously, how long will it take to fill the tank?
Pipe A can fill a tank in 10 hours, while pipe B can empty the tank in 15 hours. If both pipes are opened simultaneously, how long will it take to fill half of the tank?
A pipe can fill a tank in 10 hours. After every 4 hours, another pipe is opened which can empty the tank in 6 hours. If both pipes are opened simultaneously, how long will it take to fill the tank?
Two pipes A and B can fill a tank in 15 hours and 20 hours, respectively. If pipe A is opened for the first 5 hours, then closed, and pipe B is opened, how long will it take to fill the tank completely?
A pipe can fill a tank in 8 hours. After half of the tank is filled, another pipe is opened which can empty the tank in 16 hours. If both the pipes are opened simultaneously, how long will it take to fill the tank?
Two pipes A and B can fill a tank in 10 hours and 12 hours, respectively. If both pipes are opened together and after 3 hours, pipe B is closed, how long will it take to fill the tank?
A pipe can fill a tank in 20 hours. After every 5 hours, another pipe is opened which can empty the tank in 15 hours. If both pipes are opened simultaneously, how long will it take to fill the tank?
A tank can be filled by pipe A in 16 hours and by pipe B in 24 hours. If both pipes are opened simultaneously, how long will it take to fill half of the tank?
A cistern can be filled by pipe A in 10 hours and by pipe B in 15 hours. If both pipes are opened simultaneously and after 4 hours, pipe A is closed, how long will it take to fill the cistern?
Two pipes A and B can fill a tank in 14 hours and 18 hours, respectively. If pipe A is opened for the first 3 hours, then closed, and pipe B is opened, how long will it take to fill the tank completely?
A pipe can fill a tank in 5 hours, while another pipe can empty the tank in 10 hours. If both pipes are opened simultaneously, how long will it take to fill the tank?
Pipe A can fill a tank in 8 hours, while pipe B can empty the tank in 12 hours. If both pipes are opened simultaneously, how long will it take to fill half of the tank?
A pipe can fill a tank in 12 hours. After every 6 hours, another pipe is opened which can empty the tank in 9 hours. If both pipes are opened simultaneously, how long will it take to fill the tank?
Two pipes A and B can fill a tank in 18 hours and 24 hours, respectively. If pipe A is opened for the first 6 hours, then closed, and pipe B is opened, how long will it take to fill the tank completely?
A pipe can fill a tank in 10 hours. After half of the tank is filled, another pipe is opened which can empty the tank in 20 hours. If both the pipes are opened simultaneously, how long will it take to fill the tank?
Two pipes A and B can fill a tank in 12 hours and 16 hours, respectively. If both pipes are opened together and after 4 hours, pipe B is closed, how long will it take to fill the tank?
A pipe can fill a tank in 18 hours. After every 6 hours, another pipe is opened which can empty the tank in 12 hours. If both pipes are opened simultaneously, how long will it take to fill the tank?
A tank can be filled by pipe A in 14 hours and by pipe B in 20 hours. If both pipes are opened simultaneously, how long will it take to fill half of the tank?
A cistern can be filled by pipe A in 12 hours and by pipe B in 18 hours. If both pipes are opened simultaneously and after 6 hours, pipe A is closed, how long will it take to fill the cistern?
Two pipes A and B can fill a tank in 16 hours and 20 hours, respectively. If pipe A is opened for the first 4 hours, then closed, and pipe B is opened, how long will it take to fill the tank completely?
A pipe can fill a tank in 7 hours, while another pipe can empty the tank in 14 hours. If both pipes are opened simultaneously, how long will it take to fill the tank?
Pipe A can fill a tank in 10 hours, while pipe B can empty the tank in 16 hours. If both pipes are opened simultaneously, how long will it take to fill half of the tank?
A pipe can fill a tank in 14 hours. After every 7 hours, another pipe is opened which can empty the tank in 10 hours. If both pipes are opened simultaneously, how long will it take to fill the tank?
Two pipes A and B can fill a tank in 16 hours and 24 hours, respectively. If pipe A is opened for the first 8 hours, then closed, and pipe B is opened, how long will it take to fill the tank completely?
A pipe can fill a tank in 6 hours. After half of the tank is filled, another pipe is opened which can empty the tank in 24 hours. If both the pipes are opened simultaneously, how long will it take to fill the tank?
Two pipes A and B can fill a tank in 10 hours and 12 hours, respectively. If both pipes are opened together and after 5 hours, pipe B is closed, how long will it take to fill the tank?
A pipe can fill a tank in 12 hours. After every 8 hours, another pipe is opened which can empty the tank in 16 hours. If both pipes are opened simultaneously, how long will it take to fill the tank?
A tank can be filled by pipe A in 18 hours and by pipe B in 27 hours. If both pipes are opened simultaneously, how long will it take to fill half of the tank?
A cistern can be filled by pipe A in 16 hours and by pipe B in 24 hours. If both pipes are opened simultaneously and after 8 hours, pipe A is closed, how long will it take to fill the cistern?
Two pipes A and B can fill a tank in 20 hours and 30 hours, respectively. If pipe A is opened for the first 6 hours, then closed, and pipe B is opened, how long will it take to fill the tank completely?
A pipe can fill a tank in 8 hours, while another pipe can empty the tank in 16 hours. If both pipes are opened simultaneously, how long will it take to fill the tank?
Pipe A can fill a tank in 10 hours, while pipe B can empty the tank in 20 hours. If both pipes are opened simultaneously, how long will it take to fill half of the tank?
A pipe can fill a tank in 14 hours. After every 7 hours, another pipe is opened which can empty the tank in 20 hours. If both pipes are opened simultaneously, how long will it take to fill the tank?
Two pipes A and B can fill a tank in 16 hours and 24 hours, respectively. If pipe A is opened for the first 4 hours, then closed, and pipe B is opened, how long will it take to fill the tank completely?
A pipe can fill a tank in 12 hours. After half of the tank is filled, another pipe is opened which can empty the tank in 36 hours. If both the pipes are opened simultaneously, how long will it take to fill the tank?
Two pipes A and B can fill a tank in 10 hours and 15 hours, respectively. If both pipes are opened together and after 6 hours, pipe B is closed, how long will it take to fill the tank?
A pipe can fill a tank in 15 hours. After every 10 hours, another pipe is opened which can empty the tank in 12 hours. If both pipes are opened simultaneously, how long will it take to fill the tank?
A tank can be filled by pipe A in 12 hours and by pipe B in 18 hours. If both pipes are opened simultaneously, how long will it take to fill half of the tank?
A cistern can be filled by pipe A in 10 hours and by pipe B in 20 hours. If both pipes are opened simultaneously and after 5 hours, pipe A is closed, how long will it take to fill the cistern?
Two pipes A and B can fill a tank in 18 hours and 27 hours, respectively. If pipe A is opened for the first 9 hours, then closed, and pipe B is opened, how long will it take to fill the tank completely?
A pipe can fill a tank in 9 hours, while another pipe can empty the tank in 18 hours. If both pipes are opened simultaneously, how long will it take to fill the tank?
Pipe A can fill a tank in 12 hours, while pipe B can empty the tank in 24 hours. If both pipes are opened simultaneously, how long will it take to fill half of the tank?
A pipe can fill a tank in 16 hours. After every 8 hours, another pipe is opened which can empty the tank in 20 hours. If both pipes are opened simultaneously, how long will it take to fill the tank?
Two pipes A and B can fill a tank in 14 hours and 21 hours, respectively. If pipe A is opened for the first 7 hours, then closed, and pipe B is opened, how long will it take to fill the tank completely?
Pipe A can fill a tank in 8 hours, while pipe B can empty the tank in 12 hours. If both pipes are opened simultaneously, how long will it take to fill half of the tank?
A pipe can fill a tank in 10 hours. After every 5 hours, another pipe is opened which can empty the tank in 15 hours. If both pipes are opened simultaneously, how long will it take to fill the tank?
Two pipes A and B can fill a tank in 16 hours and 24 hours, respectively. If pipe A is opened for the first 6 hours, then closed, and pipe B is opened, how long will it take to fill the tank completely?
A pipe can fill a tank in 12 hours. After half of the tank is filled, another pipe is opened which can empty the tank in 30 hours. If both the pipes are opened simultaneously, how long will it take to fill the tank?
Two pipes A and B can fill a tank in 10 hours and 15 hours, respectively. If both pipes are opened together and after 4 hours, pipe B is closed, how long will it take to fill the tank?
A pipe can fill a tank in 16 hours. After every 8 hours, another pipe is opened which can empty the tank in 18 hours. If both pipes are opened simultaneously, how long will it take to fill the tank?
A tank can be filled by pipe A in 14 hours and by pipe B in 21 hours. If both pipes are opened simultaneously, how long will it take to fill half of the tank?
A cistern can be filled by pipe A in 12 hours and by pipe B in 16 hours. If both pipes are opened simultaneously and after 3 hours, pipe A is closed, how long will it take to fill the cistern?
Two pipes A and B can fill a tank in 18 hours and 27 hours, respectively. If pipe A is opened for the first 7 hours, then closed, and pipe B is opened, how long will it take to fill the tank completely?
A pipe can fill a tank in 9 hours, while another pipe can empty the tank in 15 hours. If both pipes are opened simultaneously, how long will it take to fill the tank?