How to solve

Problem One:

How do the following quantities change when a simple ideal Rankine cycle is modified with reheating? Assume the mass flow rate is maintained the same.Problem Two:A steam power plant operates on the ideal reheat Rankine cycle. Steam enters the high$-$pressure turbine at $8$ MPa and $500^($@$)$C and leaves at $3$ MPa $.$ Steam is then reheated at constant pressure to $500^($@$)$C before it expands to $20$ kPa in the low$-$pressure turbine. Determine the turbine work output, in kJ$//$kg$,$ and the thermal efficiency of the cycle. Also, show the cycle on a T$-$s diagram with respect to saturation lines.