a child who weighs 55 pounds receives a prescription for atovaquone with proguanil (malarone pediatric) 125 mg/50 mg po daily. a drug reference states that children 11 to 20 kg should receive 1 pediatric tablet daily; 21 to 30 kg should receive 2 pediatric tablets daily; 31 to 40 kg should receive 3 pediatric tablets daily; and greater than 40 kg should receive 1 adult tablet daily with food. the drug is available as atovaquone 62.5 mg/proguanil 25 mg pediatric tablets. how many tablets should the nurse administer?
