Question

Ms. Campbell Weight: 88.7 kgMedicine: DilantinDosage Prescribed: 12 mg/kgConcentration of Medicine onHand:250 mg/ 5 mL

Answer 1

At first, we need to find the Dosage for Ms. Campbell's weight

We will do that using the ratio method

`\begin{gathered} 12mg\rightarrow1kg \\ xmg\rightarrow88.7kg \end{gathered}`

By using the cross-multiplication

`\begin{gathered} x=(88.7*12)/(1) \\ x=1064.4mg \end{gathered}`

Now, we will find the number of milliliters of medicine when using the concentration of 250 mg/5 mL

`\begin{gathered} 250mg\rightarrow5mL \\ 1064.4mg\rightarrow ymL \end{gathered}`

By using the cross-multiplication

`\begin{gathered} y=(1064.4*5)/(250) \\ y=21.288mL \end{gathered}`

Round it to the nearest 1 decimal place, then

y = 21.3 mL

The answer is 21.3 mL