For the given cash flows, suppose the firm uses the NPV decision rule.

a$.$ At a required return of $10$ percent, what is the NPV of the project?

Note: Do not round intermediate calculations and round your answer to $2$ decimal places, e$.$g$.,32\mathrm{.}16.$

b$.$ At a required return of $20$ percent, what is the NPV of the project?

Note: A negative answer should be indicated by a minus sign. Do not round intermediate calculations and round your answer

to $2$ decimal places, e$.$g$.,32\mathrm{.}16.$