Answer:
141.98 ml/day
Explanation:
The data given by the exercise is as follows:
Weight of child = 45 lbs
Dose of medication = 0.02 g / lbs four times a day
Bottle concentration = 125 mg / tbs
The question asks for the total amount of medication the child has to receive in ml per day.
One should know the conversion of tbs to ml (1 tbs = 4.93 ml approx.)
Total medication in grams this child should receive per day:
0.02 g/lbs x 45 lbs x 4 times a day = 3.6g a day = 3600 mg a day (always check which units are the most convenient)
Since 1 tsp of the medication contains 125mg:
3600 mg / 125 mg/tsp = 28.8 tsp a day
Finally, since each tsp contains approx. 4.93 ml:
28.8 tsp x 4.93 ml/tsp = 141.98 ml a day = 141.98 ml/day
