Answer:
b. 6 years.
Explanation:
The formula and the calculation of the payback period is presented below:
= Initial investment ÷ Net cash flow
where,
Initial investment is $263,000
And, the net cash flow = After-tax net income + depreciation expenses
= $2,000 + $1,500
= $3,500
Now placed these values in the formula above, so the period would be equal to
= ($21,000) ÷ ($3,500)
= 6 years