Answer and Explanation:
The computation of the payback period is shown below:
a. For Colby, the payback period is
= Initial investment ÷ Annual Cash flow
= $500,000 ÷ $120,000
= 4.17 years
b. For Kylie, the payback period is
In year 0 = $1,560,000
In year 1 = $350,000
In year 2 = $490,000
In year 3 = $780,000
In year 4 = $470,000
In year 5 = $310,000
If we add the first 2 year cash inflows than it comes $840,000
Now we subtract the $840,000 from the $1,560,000 , so the amount is $720,000 as if we plus the third year cash inflow , the total amount exceed to the initial investment. Therefore, we minus it
And, the next year cash inflow is $780,000
So, the payback period equal to
= 2 years + $720,000 ÷ $780,000
= 2.92 years