Question has already been answered, but for someone who is coming back to see it, this is the english translation;
"A rectangular shaped tub has a base area of 3 m2. It has a depth of 4m. Half of the tub is filled with water. There is a pump, which pumps water through a tube which has a cross-section area of 20cm2. It completely pumps out water in 10 minutes. Find the minimum required power for the pump".
Mubasam Please let us know if this translation is wrong.