Answer:
Never. the amount invested is never recovered
Explanation:
Discounted payback calculates the amount of time it takes to recover the amount invested in a project from it cumulative discounted cash flows
Discounted cash flow in year 1 = 7200 / 1.16 = $6206.90
Discounted cash flow in year 2 = $8,900 / 1.16² = $6614.15
Discounted cash flow in year 3 = $7,500 / 1.16³ = $4804.93
Adding the discounted cash flows together gives a value of $17,625.98. This value is less than the cost of the project. So, the amount invested is never recovered