please can someone help to find ( in steps )the present worthy for both alternatives c and d ( PWd , PWc )

I know the final answers only ( PWd = -463607 , PWc= -477077 )

MARR%=10%

Example: implementing Rule # 2 (pg.251-252) The second example involves a cost project situation. Alternatives C and D are two mutually exclusive cost alternatives with estimated net cash flows as shown over a three-year life. Cost alternatives are those with all negative cash flows, except for a possible positive cash flow element from disposal of assets at the end of the project's useful life. This situation occurs when the organization must take some action, and the decision involves the most economical way of doing it (e.g., the addition of environmental control capability to meet new regulatory requirements). Alternative End of Year C D 0 2 3 3a - $380,000 -38,100 -39,100 - 40,100 0 -$415,000 -27,400 -27,400 -27,400 26,000 a market value 9