Question

A swimming pool in the shape of a trapezoidal prism is 12 meters long, 6 meters wide, 1 meter deep at the shallow end and 3 meters deep at the deep end. Water is being pumped into the pool at 1 cubic meter per minute, and there is 1 meter of water at the deep end.
a.) What percent of the pool is filled?
b.) At what rate is the water level rising?