Quantity I: Pipes P and Q individually can fill the empty tank in 20 hours and 25 hours respectively Pipe R alone can empty the full tank in 40 hours. Pipe P is opened at the start and after 5 hours pipe Q is also opened. After 4 more hours pipe R is also opened. In how many hours the tank is filled completely?
Quantity II: P and Q together can do a piece of work in 6 hours. P is 50% more efficient than Q. In how many hours, P alone can complete the work?
1
Quantity I >= Quantity II
2
Quantity I > Quantity II
3
Quantity I < Quantity II
4
Quantity I <= Quantity II
5
Quantity I = Quantity II