Question

A drug is available in a concentration of 50 mg/10 ml. How many ml are needed for a 3 mg dose?

A. 0.2 ml
B. 0.3 ml
C. 0.6 ml
D. 0.8 ml

Answer 1

To determine how many milliliters are needed for a 3 mg dose from a drug concentration of 50 mg/10 ml, set up a proportion and solve for x, which yields 0.6 ml.

Step-by-step explanation:

The question is asking how many milliliters are needed for a 3 mg dose given that the drug concentration is 50 mg/10 ml. To solve this, we can set up a proportion:

50 mg : 10 ml = 3 mg : x ml

Multiply across the diagonals (cross-multiplication):

(50 mg) * x = (3 mg) * (10 ml)

50x = 30

Divide both sides by 50 to solve for x:

x = 30 / 50

x = 0.6 ml