!!!!!!A.) has been solved already

Solve for B.)If the MARR for machine Y is 12%, then the NPW of machine Y is?

Solve for C.)If machine"Y" has no salvage value, then what would be the NPW of Machine "Y"(MARR is 12%)?

NPW of Cash Flows Philipp Inc, a German company is considering the following two equipment alternatives for their plant in Tennessee. The cost information for those two machines (which are under consideration) is given in table below. Machine Y $66,000 $9,000 per year for 20 years Machine x Initial Cost $80,000 $12,000 for the first 10 years & Benefits/yr $8,000 for the next 10 years Life 20 years Salvage $30,000 Value MARR 8.6% a. The NPW of machine X is? Answer format: $ xxxx $20,000 Answer: 20748