Answer:
111 mg (to the nearest whole number)
Explanation:
1 lb = 0.45359237 kg
⇒ 49 lbs = 49 x 0.45359237 = 22.22602613... kg
If the medication is administered at 5 mg/kg/day then
22.22602613... x 5 = 111.1301307 = 111 mg (to the nearest whole number)