Please solve also using lost-work balances in the problem. The answers will be incorrect if you neglect lost work, and I will downvote.

Problem 1: Part of a Modified Rankine Cycle Used in Nuclear Plants A portion of saturated steam (stream S1 ) at P1=60 bar is expanded into a High Pressure (HP) steam condensing turbine K-101 to an exhaust pressure of P4=11.5 bar . The discharge of the HP turbine (stream $4 is directed to a moisture separator to remove the liquid water. The vapor from the HP turbine discharge (stream S6) is reheated to T8=250C in the heat exchanger E-101 with a slip stream S from the main steam supply line S1. A schematic of this process is shown below. Assume that the steam turbine efficiency is =80% 1. Calculate the steam flow rate(in MMSCFD) of stream S2 required to produce 250MW of power from the high pressure turbine 2. Calculate the steam flow rate(in MMSCFD) of stream $3 required to reheat the vapor exhaust of the high pressure turbine to 250C 3. Calculate the steam flow rate(in MMSCFD) of stream S1 4. Calculate the temperature(in deg C) of stream S5 5. Calculate the temperature(in deg C) of stream S7