Donny, of donny's doughnuts, bakes and sells 100 dozen doughnuts a day using one mixer and one fryer. his rival, sunshine, of sunshine's doughnuts, produces 180 dozen doughnuts a day using two mixers and two fryers. both shops use the exact same technology to make doughnuts and have the same number of workers and the same size building. donny and sunshine both increase their capital equipment by one mixer and one fryer.