Answer:
Step-by-step explanation:
If tables with present values factors are to be used, the solution to this question is best presented in a tabular format as shown below:
Year Cashflow PV factor of $1 at 10% PV (cashflow*PV Factor)
0 (27,000) 1.0000 (27,000)
1 9,000 0.9091 8,182 
2 9,000 0.8264 7,438 
3 9,000 0.7513 6,762 
4 9,000 0.6830  6,147 
  Net Present Value  1,529 
Net present value is the sum of all presents values from t=0 to t=4