A nurse is preparing to administer ibuprofen 10 mg/kg PO to a child. The child weighs 55 lb. Available is ibuprofen 100 mg/5 mL solution. How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

1. Convert pounds to kilograms: 55 lbs / 2.2 lbs/kg = 25 kg 2. Calculate the desired dose: Dose (mg) = Dose per kg (mg/kg) x Weight (kg) Dose (mg) = 10 mg/kg x 25 kg = 250 mg 3. Calculate the volume to administer: Volume (mL) = Desired dose (mg) / Concentration (mg/mL) Volume (mL) = 250 mg / (100 mg/5 mL) Volume (mL) = 250 mg / 20 mg/mL Volume (mL) = 12.5 mL Therefore, the nurse should administer 12.5 mL of ibuprofen.