William Jennings Bryan was Decmocratic Party candidate for US Presidency elections during the presidential election of 1896. He was unsuccessful in that.
Two pipes P and Q can fill an empty tank in 25 hours and 20 hours respectively. Pipe R alone can empty the completely filled tank in 50 hours. Firstly both the pipes P and Q are opened and after 8 hours pipe R is also opened. What will be the total time (in hours) taken to completely fill the tank?