A nurse is preparing to administer liquid ibuprofen to a school-age child. The prescription reads 200 mg every 8 hr. The amount available is 100 mg/5 mL. How many mL of ibuprofen should the nurse administer over a 24-hr period? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

Calculate the amount of ibuprofen needed for one dose: Prescription: 200 mg every 8 hours Available concentration: 100 mg/5 mL To find the volume for one dose: (200 mg) / (100 mg/5 mL) = 10 mL Determine the number of doses in 24 hours: 24 hours / 8 hours per dose = 3 doses Calculate the total volume for 24 hours: 10 mL per dose 3 doses = 30 mL