A nurse needs to administer 300 mg of a medication available as 100 mg per 2 mL. Using ratio and proportion, how many mL should the nurse administer?
4 mL
8 mL
10 mL
6 mL
The Correct Answer is D
Calculation:
- Set up the ratio
100 mg : 2 mL = 300 mg : X mL
- Solve for X using cross-multiplication
100 × X = 2 × 300
100X = 600
X = 600 ÷ 100
X = 6 mL
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
- Identify the ordered dose and available concentration
Ordered Dose: 600 mg
Available Concentration: 200 mg/mL
- Calculate the volume to administer
Volume to administer = Ordered Dose ÷ Concentration
Volume to administer = 600 ÷ 200
Volume to administer = 3 mL
Correct Answer is B
Explanation
Calculation:
- Identify the desired dose and the available dose
Desired Dose: 75 mg
Available Dose: 150 mg per tablet
- Apply the Desired ÷ Have method
Number of Tablets = Desired ÷ Have
Number of Tablets = 75 ÷ 150
Number of Tablets = 0.5 tablets
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