4 fin wk 4 | Business & Finance homework help

1 What is the economic life of the asset under consideration?

2 What is the rate of obsolescence? 

Project  A NPV =31,739.95  and IRR=8.97%

compare to

Project B NPV= 34,191.05 and IRR = 16.88%

See Attach : 

I am only responsible for these two questions. the attach is just infor to help ;

The parts that the others teammate have done.

the case we are focus on.