Oriole Mills management is evaluating two alternative heating systems. Costs and projected energy savings are given in the following

table. The firm uses $11\mathrm{.}5$ percent to discount such project cash flows.

What is the NPV of the systems? $($Enter negative amounts using negative sign, e$.$g$.-45\mathrm{.}25.$ Do not round discount factors and intermediate

calculations. Round final answers to $0$ decimal places, e$.$g$.5,275.)$

NPV of system $100$ is