
Answer:
$8.9 Years
Explanation:
The computation of payback period for the new machine is shown below:-
Annual Cash flow
Sales               $16,000
Expenses            $9,000
($12,000 - $3,000)
Depreciation         $3,000
Net revenue          $4,000
Tax                  $1,600
($4,000 × 40%)
Net income after tax    $2,400
Add: Depreciation      $3,000
Cash Flow            $5,400
Now, we compute the payback period
Payback period = Initial investment ÷ Annual cash flow
= $48,000 ÷ $5,400
= $8.9 Years
So, for computing the payback period we simply applied the above formula.