Answer:
the payback period is 3.34 years
Explanation:
The computation of the payback period is as follow;
Given that
Year    Cash flows     Cumulative cash flows
0 Â Â Â Â Â Â -$40,000 Â Â Â Â Â $-40,000
1 Â Â Â Â Â Â Â $3,000 Â Â Â Â Â Â Â $3,000
2 Â Â Â Â Â Â Â $8,000 Â Â Â Â Â Â Â $11,000
3 Â Â Â Â Â Â Â $14,000 Â Â Â Â Â Â $25,000
4 Â Â Â Â Â Â Â $19,000 Â Â Â Â Â Â $44,000
5 Â Â Â Â Â Â Â $22,000 Â Â Â Â Â Â $66,000
6 Â Â Â Â Â Â Â $28,000 Â Â Â Â Â $94,000
Now the payback period is
= 3 years +  ($40,000 - $25,000) ÷ $44,000
= 3 years + 0.34
= 3.34 years
Hence, the payback period is 3.34 years