Variable Cost per Unit = $54,000 Ã· 18,000 units = $3. The variable cost per unit is $3. The fixed cost will be the same at both the highest and lowest levels of production because fixed costs don't change.
Ciprofloxacin is available only by prescription and is used to treat certain bacterial infections. It comes in a variety of strengths and forms, including eye drops and ear drops. Ciprofloxacin ophthalmic (eye) drops are used for treating bacterial conjunctivitis (also called  pink eye ) and corneal ulcers.
Ophthalmic ciprofloxacin comes as a solution (liquid) and an ointment to apply to the eyes. Ciprofloxacin ophthalmic solution is usually used often, between once every 15 minutes to once every 4 hours while awake for 7 to 14 days or longer. Ciprofloxacin ophthalmic ointment is usually applied 3 times a day for 2 days and then twice a day for 5 days. Use ophthalmic ciprofloxacin at around the same times every day. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand.