Question

a solution strength of 30 mg of medicine in 1 ml of solution is available. if a patient needs 27 mg of medicine, how many ml should be administered? if a patient needs 27 mg of medicine, ml need to be administered. (type a whole number or a decimal.)

Explanation:

Step1: Set up proportion

Let $x$ be the volume in ml to be administered. We have the proportion $\frac{30\ mg}{1\ ml}=\frac{27\ mg}{x\ ml}$.

Step2: Cross - multiply

$30x = 27\times1$.

Step3: Solve for $x$

$x=\frac{27}{30}=0.9$.

Answer:

$0.9$