not sure how about problem

The Cimeron Cimmamon Co. is undertaking a program to reduce operating costs. The vice president in charge of operations has established a goal of saving an equivalent total present amount of $90,000 in the next 4 years through reduced finished-product losses. He estimates that the company will be able to save $40,000 the first year, but cost reductions will become more difficult each year. If the reductions are expected to follow a uniformly decreasing gradient, what must the reductions be in years 2, 3, and 4 in order for the company to meet its established goal? The company's interest rate is 15% per year