Slugworth Co. makes Product A-1. It costs $30,000 to produce A-1. Slugworth Co. can sell A-1, in its current state, for $45,000. Alternatively Slugworth Co can process A-1 further, at a cost of $15,000, to produce Product B-2. Product B-2 can be sold for $80,000. Compute the differential income from processing A-1 further to produce B-2.