Two methods can be used to produce expansion anchors. Method A costs $$65,000$ initially and will have a $$17,000$ salvage value after $3$ years. The operating cost with this method will be $$28,000$ in year $1,$ increasing by $$3800$ each year. Method $B$ will have a first cost of $$129,000,$ an operating cost of $$8000$ in year $1,$ increasing by $$6500$ each year, and a $$39,000$ salvage value after its $3-$year life. At an interest rate of $13\%$ per year, which method should be used on the basis of a present worth analysis?

The present worth for method $A$ is $

The present worth for method B is $

Method is used to produce expansion anchors.