Question

order: morphine sulfate 10 mg im q 4°
supply: morphine sulfate 15mg/ml
how many ml’s will you administer? ____________ (round to tenths)

Explanation:

Step1: Set up proportion

Let $x$ be the volume in mL to be administered. We have the proportion $\frac{10\ mg}{x\ mL}=\frac{15\ mg}{1\ mL}$.

Step2: Cross - multiply

$15x = 10\times1$.

Step3: Solve for $x$

$x=\frac{10}{15}=\frac{2}{3}\approx0.7$ mL.

Answer:

$0.7$ mL