An investment project provides cash inflows of $660 per year for eight years.

An investment project provides cash inflows of $660 per year for eight years.

 
 

What is the project payback period if the initial cost is $1,525? (Enter 0 if the project never pays back. Round your answer to 2 decimal places, e.g., 32.16.)

 
 

Payback period

years

 
 

What is the project payback period if the initial cost is $3,350? (Enter 0 if the project never pays back. Round your answer to 2 decimal places, e.g., 32.16.)

 
 

Payback period

years

 

What is the project payback period if the initial cost is $5,500? (Enter 0 if the project never pays back. Round your answer to 2 decimal places, e.g., 32.16.)

  

Payback period

years

 

Explanation:

To calculate the payback period, we need to find the time that the project has recovered its initial investment. The cash flows in this problem are an annuity, so the calculation is simpler. If the initial cost is $1,525, the payback period is:

Payback = 2 + ($205 / $660) = 2.31 years

  

There is a shortcut to calculate the payback period when the future cash flows are an annuity. Just divide the initial cost by the annual cash flow. For the $3,350 cost, the payback period is:

Payback = $3,350 / $660 = 5.08 years

 

The payback period for an initial cost of $5,500 is a little trickier. Notice that the total cash inflows after eight years will be:

Total cash inflows = 8($660) = $5,280

If the initial cost is $5,500, the project never pays back. Notice that if you use the shortcut for annuity cash flows, you get:

Payback = $5,500 / $660 = 8.33 years

This answer does not make sense since the cash flows stop after eight years, so again, we must conclude the payback period is never.