Problem $5-16$ Comparing Investment Criteria

Consider the following cash flows of two mutually exclusive projects for AZ$-$Motorcars.

Assume the discount rate for both projects is $11$ percent.

a$.$ What is the payback period for each project? $($Do not round intermediate

calculations and round your answers to $2$ decimal places, e$.$g$.,32\mathrm{.}16.)$

b$.$ What is the NPV for each project? $($Do not round intermediate calculations and

round your answers to $2$ decimal places, e$.$g$.,32\mathrm{.}16.)$