Number of doses needed : 4 doses
Further explanation
Given
weight of the child : 25 kg
Treatment of Benadryl : 5 mg/kg weight
The concentration of Benadryl : 12.5 mg/5 ml
1 dose = 12.5 ml
Required
Number of doses needed
Solution
Amount of Benadryl for 25 kg weight :
[tex]\tt 25~kg\times 5~\dfrac{mg}{kg}=125~mg[/tex]
Amount of Benadryl solution :
[tex]\tt \dfrac{125~mg}{12.5~mg/5~ml}=125~mg\times \dfrac{5~ml}{12.5~mg}=50~ml[/tex]
Amount of doses :
[tex]\tt \dfrac{50~ml}{12.5~ml}=4~doses[/tex]
