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Ratio and Proportion: 240 : X = 80 : 0.8 (Enter a numeric value only.)
- A. 2.4
- B. 3.2
- C. 4
- D. 1.6
Correct Answer: A
Rationale: To solve for X, set up the proportion: 240/X = 80/0.8. Cross-multiply to get 240 — 0.8 = 80 — X, which simplifies to 192 = 80X. Dividing both sides by 80 gives X = 192/80 = 2.4. Therefore, the correct answer is A) 2.4.
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How many pints are in 56 ounces?
- A. 4
- B. 3.5
- C. 3
- D. 5
Correct Answer: B
Rationale: To convert ounces to pints, you need to know that there are 16 ounces in a pint. To find out how many pints are in 56 ounces, you divide 56 by 16 (56 ounces · 16 ounces/pint), which equals 3.5 pints. Therefore, there are 3.5 pints in 56 ounces.
A patient is consuming a clear diet, and a healthcare professional is reviewing the daily intake and output (I&O). The urinary drainage bag records a total of 1,000 mL for the past 24 hours. The total intake is:
- A. 400
- B. 450
- C. 440
- D. 500
Correct Answer: C
Rationale: To calculate the total fluid intake, you must convert the various fluid types consumed into milliliters. The patient had 2 cups of coffee (2 x 8 oz = 16 oz), 1 clear soup (16 oz), and 1 pint of water (16 oz). Converting these values to milliliters: 16 oz coffee + 16 oz soup + 16 oz water = 48 oz = 1419.53 mL. Subtracting the total output of 1000 mL from the total intake of 1419.53 mL gives a fluid intake of 419.53 mL. Rounding to the nearest whole number, the total intake is 420 mL, corresponding to option C.
What is the sum of 2/3 + 4/9?
- A. 8/15
- B. 10/9
- C. 6/12
- D. 9/9
Correct Answer: B
Rationale: To add fractions, find a common denominator, which is 9 in this case. Convert 2/3 to 6/9. Now, add 6/9 + 4/9 to get 10/9, which simplifies to 1 1/9.
What is the result of adding 1/4 + 3/8?
- A. 4/12
- B. 1/3
- C. 5/8
- D. 1/2
Correct Answer: C
Rationale: To add fractions, a common denominator is needed. In this case, the common denominator is 8. Converting 1/4 to have the same denominator results in 2/8. Adding 2/8 + 3/8 gives 5/8. Thus, the correct answer is 5/8.
How many kilograms are in 0.12 grams?
- A. 120.0 kilograms
- B. 0.0012 kilograms
- C. 0.00012 kilograms
- D. 12.0 kilograms
Correct Answer: C
Rationale: To convert grams to kilograms, we need to divide by 1000 because there are 1000 grams in a kilogram. So, to convert 0.12 grams to kilograms, we divide 0.12 by 1000, which equals 0.00012 kilograms. Therefore, choice C (0.00012 kilograms) is the correct answer.
Choice A (120.0 kilograms) is incorrect as it incorrectly multiplies instead of dividing by 1000. Choice B (0.0012 kilograms) is incorrect as it divides 0.12 by 100 instead of 1000. Choice D (12.0 kilograms) is incorrect as it wrongly drops the zero in the decimal point conversion.