Granfield Company has a piece of manufacturing equipment with a book value of $43,500 and a remaining useful life of four years. At the end of the four years the equipment will have a zero-salvage value. Granfield can purchase new equipment fo $141,000 and receive $24,800 in return for trading in its current equipment. The current equipment has variable manufacturing costs of $46,000 per year. The new equipment will reduce variable manufacturing costs by $22,500 per year over its four-year life, The total increase or decrease in income by replacing the current equipment with the new equipment is: $26,200 are