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Test Bank (Download Now) For Brown and Mulholland’s Drug Calculations 11th Edition by Tritak ISBN: 9780323551298

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Chapter 02: Ratio and Proportion
Tritak: Brown and Mulholland’s Drug Calculations: Ratio and Proportion Problems
for Clinical Practice, 11th Edition
ESSAY
Directions: Solve the following problems.
1. Solve for x, and prove your answer: 2 : 5 = 10 : x
ANS:
x = 25
Know Want to Know
2 : 5 = 10 : x
x = 25
Proof: 2  25 = 50
5  10 = 50
2. Solve for x, and prove your answer: 3 : 10 = 6 : x
ANS:
x = 20
Know Want to Know
3 : 10 = 6 : x
x = 25
Proof: 3  20 = 60
10  6 = 60
Directions: Set up a ratio and proportion in each of the following problems. Label and prove
your answers.
3. There are 20 patient beds contained in each hospital unit. How many units would there be for
a hospital with a 300-bed capacity?
ANS:
15 units
Know Want to Know
20 beds : 1 unit = 300 beds : x units
x = 15 units
Proof: 20  15 = 300
1  300 = 300
4. Each nurse is assigned five patients for a shift. How many nurses will be needed for 250
patients?
ANS:
50 nurses
Know Want to Know
1 nurse : 5 patients = x nurses : 250 patients
x = 50 nurses
Proof: 1  250 = 250
5  50 = 250
5. If a patient needs to have three pills 4 times a day, how many pills will be needed for a 1-week
supply?
ANS:
84 pills
Know Want to Know
12 pills : 1 day = x pills : 7 days
x = 1  27
x = 84 pills
Proof: 12  7 = 84
1  84 = 84
6. A hospital hires one CNA for every 10 patients. How many CNAs will be needed for 200
patients?
ANS:
20 CNAs
Know Want to Know
1 CNA : 10 patients = x CNAs : 200 patients
x = 20 CNAs