Answer:
Explanation:
I have attached a screenshot of the spreadsheet I used.
First, input each incremental cashflow in its own cell,
Input the MARR rate as well
To determine if accepting alternative B is worth it or not based on rate of return, use IRR (Internal rate of return) function on excel by typing "=IRR" and select the array of cells containing the cashflows. IRR is 13.84% is positive and it means that alternative B is more profitable since the IRR is greater than the MARR of 12%