From the information provided, Fairways has a plan to operate a driving range facility for 6 years. The initial investment is machinery worth $70000. The depreciation of the machinery is tax deductible and the final value is 40% of the original value or $28000. The sales are estimated to be 20000 buckets of balls which at $4 per bucket is $80000 for the first year; the sales increase by 750 buckets every year for years 2 - 6. The price is constant at $4. 

In year 1, the sales are $80000. The expenditure is 0.15*80000 + 5000 + 40000= 57000. The gross income is 23000. The tax-deductible depreciation is 7000. The gross income is 16000. With a rate of taxation of 15%, the net income is 13600

In year 2, sales are $83000. The expenditure is 83000*(0.15+0.1) + 40000 = 60750. The gross income is 22250. The taxes are applicable to 15250. The net income is 12962.5

In year 3, sales are 86000. The expenditure is 86000*(0.15+0.1) + 40000 = 61500. The gross income is 24500. The taxes are applicable to 17500. The net income is 14875

In year 4, sales are 89000. The expenditure is 89000*(0.15+0.1) + 40000 = 62250. The gross income is 26750. The taxes are applicable to 19750. The net income is 16787.5

In year 5, sales are 92000. The expenditure is 92000*(0.15+0.1) + 40000 = 63000. The gross income is 29000. The taxes are applicable to 22000. The net income is 18700

In year 6, sales are 95000. In addition the initial investment's resale value is $28000. The expenditure is 95000*(0.15+0.1) + 40000 = 63750. The gross income is 59250. The net income is 50362.5

As the required rate of return is 20%, the NPV of the project is 13600/1.2 + 12962.5/1.2^2 + 14875/1.2^3 + 16787.5/1.2^4 + 50362.5/1.2^5 - 70000 = 57278.66 - 70000 = -12721

The NPV of the project is a negative value of -$12721.