Brown and Mulhollands Drug Calculations 11th Edition Tritak Test Bank, Exams of Nursing

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Brown and Mulhollands Drug Calculations 11th

Edition Tritak Test Bank

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

Proof: 1  200 = 200 10  20 = 200

7. A patient has a bottle of liquid medicine that contains 60 doses of medicine. How many days will the bottle last if the patient takes 4 doses a day? ANS: 15 days Know Want to Know 4 doses : 1 day = 60 doses : x days x = 15 days Proof: 4  15 = 60 1  60 = 60
8. A hospital averages 22 admissions per day. How many admissions does it average in a 30-day month? ANS: 600 admissions Know Want to Know 22 admissions : 1 day = x admissions : 30 days x = 22  30 x = 600 admissions Proof: 22  30 = 660 1  660 = 660
9. The x-ray department schedules a chest x-ray every 15 min. How many chest x-rays can be taken in 7 hr? ANS: 28 x-rays Know Want to Know 4 x-rays : 1 hr = x x-rays : 7 hr x = 4  7 x = 28 x-rays Proof: 4  7 = 28 1  28 = 28
10. There are 50 syringes in each package. The hospital uses 50 packages a week. How many syringes does the hospital use in a week?

ANS: 2500 syringes Know Want to Know 50 syringes : 1 package = x syringes : 50 packages x = 50  50 x = 2500 syringes Proof : 50  50 = 2500 1  2500 = 2500

11. The emergency room budgets for 100 L of intravenous D5W per day. How many liters are needed for 4 weeks? ANS: 2800 L Know Want to Know 100 L : 1 day = x L : 28 days x = 100  28 x = 2800 L Proof: 100  28 = 2800 1  2800 = 2800
12. The hospital schedules 150 nurses per week to cover two 12-hr shifts. How many nurses are employed each shift? ANS: 75 nurses Know Want to Know 150 nurses : 2 shifts = x nurses : 1 shift x = 75 nurses per shift Proof: 150  1 = 150 2  75 = 150
13. The hospital offers up to $3000 in tuition reimbursement. If each course costs $500, how many courses can you take? ANS: 6 courses Know Want to Know $500 : 1 course = $3000 : x courses

17. You have to mix formula at 2 Tbsp per 8 - oz bottle. How many Tbsp will you need to use for 6 bottles? ANS: 12 Tbsp Know Want to Know 2 Tbsp : 1 bottle = x Tbsp : 6 bottles x = 2  6 x = 12 Tbsp Proof: 2  6 = 12 1  12 = 1
18. The top sheets from the laundry are 12 to a package. How many packages will you need to cover 60 beds? ANS: 5 packages Know Want to Know 12 beds : 1 package = 60 beds : x packages x = 5 packages Proof: 12  5 = 60 1  60 = 60
19. The patient has a bottle of 100 cap. How many days will the bottle last if the patient takes 4 cap per day? ANS: 25 days Know Want to Know 4 cap : 1 day = 100 cap : x days x = 25 days Proof: 4  25 = 100 1  100 = 100
20. Your patient is being discharged and has to take 2 pills 3 times a day. How many pills will be needed for a 14 - day supply? ANS:

84 pills Know Want to Know 6 pills : 1 day = x pills : 14 days x = 6  14 x = 84 pills Proof: 6  14 = 84 1  84 = 84

21. How many syringes are there in a package of 10 dozen? Conversion factor: 1 dozen = 12 syringes. ANS: 120 syringes Know Want to Know 12 syringes : 1 dozen = x syringes : 10 dozen x = 12  10 x = 120 syringes Proof: 12  10 = 120 1  120 = 120
22. How many hr are there in 10 days? Conversion factor: 24 hr = 1 day. ANS: 240 hr Know Want to Know 24 hr : 1 day = x hr : 10 days x = 24  10 x = 240 hr Proof: 24  10 = 240 1  240 = 240
23. How many min are in 4.5 hr? Conversion factor: 1 hr = 60 min. ANS: 270 min Know Want to Know 1 hr : 60 min = 4.5 hr : x min x = 60  4. x = 270 min Proof: 1  270 = 270 60  4.5 = 270

Step 1: Know Want to Know 400 pages : 1 day = x pages : 30 days x = 400  30 x = 12,000 pages in 30 days Proof: 400  30 1  12,000 =12, Step 2: Know Want to Know 500 pages : 1 ream = 12,000 pages : x reams x = 24 reams Proof: 500  24 = 12, 1  12,000 = 12,

28. The patient takes 5 medications 4 times a day. How many medications does the patient take in 1 week? Conversion factor: 7 days = 1 week. ANS: 140 medications per week Know Want to Know 20 medications : 1 day = x medications : 7 days x = 20  7 x = 140 medications per week Proof: 20  7 = 140 1  140 = 140
29. There are 10 RNs on each unit per 24-hr shift. How many RN salaries are needed for a week on a unit? Conversion factor: 7 days = 1 week. ANS: 70 RN salaries Know Want to Know 10 RNs : 1 day = x RNs : 7 days x = 10  7 x = 70 RN salaries Proof: 10  7 = 70 1  70 = 70
30. The computer has 4 gigabytes (GB) of memory. How many megabytes (MB) of memory does this equal? Conversion factor: 1024 MB = 1 GB.

ANS: 4096 MB Know Want to Know 1024 MB : 1 GM = x MB : 4 GB x = 1024  4 x = 4096 MB Proof: 1024  4 = 4096 1  4096 = 4096

31. The cardiac rehabilitation track is mile. The patient is now completing 12 laps on the track every morning. How many miles is the patient completing? Conversion factor: 4 laps (each lap is mile) = 1 mile. (Create a one-step ratio and proportion.) ANS: 3 miles Know Want to Know 4 laps : 1 mile = 12 laps : x miles x = 3 miles Proof: 4  3 = 12 1  12 = 12
32. The surgeon makes an incision that is 7 cm long. What is the equivalent in inches? Conversion factor: 2.5 cm = approximately 1 inch. ANS: 3 inches Know Want to Know 2.5 cm : 1 inch = 7.5 cm : x inch x = 3 inches Proof: 2.5  3 = 7. 1  7.5 = 7.
33. The field is 300 yards long. How many meters is it? Conversion factor: 1 yard = approximately 0.9 m. ANS:

x = 0.25 quarts Proof: 32  0.25 = 8 1  8 = 8 Step 2: Know Want to Know 0.25 quarts : 1 hr = x quarts : 12hr x = 0.25  12 x =3 quarts Proof: 0.25  12 = 1  3 = 3

37. The patient takes 7 oral medications per day. How many medications does the patient take in 2 weeks? Conversion factor: 7 days = 1 week. ANS: 98 medications Know Want to Know 7 medications : 1 day = x medications : 14 days x = 14  7 x = 98 medications Proof: 7  14 = 98 1  98 = 98
38. A newborn weighs 3500 g. How many kg does the infant weigh? Conversion factor: 1 kg = 1000 g. ANS: 3.5 kg Know Want to Know 1 kg : 1000 g = x kg : 3500 g x = 3.5 kg Proof: 1  3500 = 3000 3.5  1000 = 3500
39. How many km are in 75 miles? Conversion factor: 0.6 miles = 1 km. ANS:

125 km Know Want to Know 0.6 miles : 1 km = 75 miles : x km x = 125 km Proof: 0.6  125 = 75 1  75 = 75

40. A child weighs 66 lb. How many kg does the child weigh? Conversion factor: 1 kg = 2.2 lb. ANS: 30 kg Know Want to Know 1 kg : 2.2 lb = x kg : 66 lb x = 30 kg Proof: 1  66 = 66 2.2  30 = 66 Directions: Fill in the quantity for x in the following ratio and proportion table.
41. 1 : 2 = 4 : x ANS: 8
42. 2 : 6 = 3 : x ANS: 9
43. 5 : 10 = 10 : x ANS: 20
44. 12 : 4 = 15 : x ANS: 5
45. x : 5 = 5 : 25 ANS:

x = 18 vacation/sick days per year Proof: 1.5  12 = 18 1  18 = 18

53. The physician’s order states the patient must consume 1500 mL of water every 24 hr. If the patient is awake 12 hr per day, how many mL of water should the patient consume each waking hr? ANS: 125 mL per hr Know Want to Know 1500 mL : 12 hr = x mL : 1 hr x = 125 mL per hr Proof: 1500  1 = 1500 12  125 = 1500
54. The ambulance averages 15 miles per gallon. If gasoline costs 3 dollars per gallon, then what is the cost for driving 450 miles per week? (Is this a one-step or two-step ratio and proportion?) ANS: 90 dollars per week Two-step ratio and proportion Step 1: Know Want to Know 15 miles : 1 gallon = 450 miles : x gallons x = 30 gallons per week Step 2: Know Want to Know $3:1 gallon = $ x : 30 gallons x = $90 per week
55. The patient is taking medicine to increase urinary output. The physician requested to be notified if the patient’s urinary output fell below 1500 mL per 24 hr. The patient averages an output of 50 mL per hr. Should the physician be notified? ANS: Know Want to Know 50 mL : 1 hr = x mL : 24 hr

x = 1200 mL per 24 hr Yes. The physician should be notified.