There are two competing alternatives in your textile business. A-type Tufting Machine costs $20,000 and B-Type Tufting Machine costs $15,000. A-type Tufting Machine can result in $17,000 labour savings in the first two years and $12,000 in year three. B-type Tufting Machine can result in $15,000 labour savings in the first two years.

Assume MARR=10%. and find the difference between the net present worth of these two alternatives using infinite planning horizon with project repeatability.