Answer:
6.34 years
Explanation:
Year   Cash outflow  Cash inflow  Net cash flow  Cumulative cash flow
1          ($1,900,000)     $95,000       ($1,805,000)          ($1,805,000)
2         ($550,000)       $205,000     ($345,000)             ($2,150,000)
3                                   $360,000     $360,000               ($1,790,000) 
4                                   $485,000     $485,000                ($1,305,000)
5                                   $510,000      $510,000                ($795,000)
<u>6                                   $595,000     $595,000               ($200,000)</u>
7                                   $595,000     $595,000                $395,000
8                                   $305,000     $305,000                $700,000
9                                   $255,000     $255,000                $955,000
10                                  $250,000     $250,000                $1,205,000
Payback period = 6 + 200,000/ 595,000
Payback period = 6 + 0.3361345
Payback period = 6.336134
Payback period = 6.34 years
So, the payback period of this uneven cash flow is 6.34 years.