3. Your firm currently sells 120 units a month at a price of $250 a un increase your sales by an additional 40 units if you switch to a net. month at a price of $250 a unit. You think you can monthly interest rate is .6 percent and your var 40 units if you switch to a net 30 credit policy. The 18.6 percent and your variable cost per unit is $170. What is the incremental cash in flow from the proposed credit policy switch? the proposed credit policy switch? (10 points)