Find Required mass of ocean flow water.

Question

A small power plant produces 25 kg/s steam at 3 MPa, 600⁰C in the boiler. it cools the condenser with ocean water coming in at 12⁰C and returned at 15⁰C. Condenser exit is 45⁰C. Find

1. net power output.
2. Required mass of ocean flow water.