Answer:
Change in cash flow (year 2) is $27,000 
Step-by-step explanation:
Given:
Year Unit Sales 
1 8,000 
2 9,000 
3 12,000 
4 15,000
Growth per year sales = 15% 
revenue per unit = $180
Computation:
 Year1 Year2 Year3 Year4 
Sales 8,000 9,000 12,000 15,000 
Sales revenue 1,440,000 1,620,000 2,160,000 2,700,000 
NWC requirement 216,000 243,000 324,000 405,000 
Cashflows for NWC 166000 27000 81000 81000 
Change in cash flow (year 2) is $27,000