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In a nursing school with 89 students, if 7 out of 8 are female, what percentage of students are female?
- A. 85%
- B. 87.50%
- C. 90%
- D. 75%
Correct Answer: B
Rationale: To find the percentage of female students, first determine the number of female students by multiplying (7/8) by 89, resulting in 78 females. Then, to calculate the percentage, divide the number of female students (78) by the total number of students (89) and multiply by 100 to get 87.50%. Therefore, 87.50% of the students in the nursing school are female.
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How many ounces (oz) are in 3/4 pint?
- A. 10 oz
- B. 12 oz
- C. 14 oz
- D. 16 oz
Correct Answer: B
Rationale: To convert 3/4 pint to ounces, you need to know that 1 pint is equal to 16 ounces. To find out how many ounces are in 3/4 pint, you multiply 3/4 by 16. This calculation gives us 12 ounces. Therefore, there are 12 ounces in 3/4 pint. Remember, when converting between different units of measurement, it is crucial to understand the relationship between the two units to perform accurate conversions.
Which of the following fractions is the largest?
- A. 3/8
- B. 3/7
- C. 3/9
- D. 3/6
Correct Answer: D
Rationale: To compare fractions, it is essential to look at the denominator. The larger the denominator, the smaller the fraction. In this case, all fractions are multiples of 1/3. By simplifying the fractions, we see that 3/6 is the largest. It simplifies to 1/2, which is greater than 3/7, 3/8, and 3/9. A fraction closer to 1 is larger, hence 3/6 (or 1/2) is the largest fraction among the options provided.
Which of the following decimals is the largest?
- A. 0.6
- B. 0.667
- C. 0.0688
- D. 0.68
Correct Answer: D
Rationale: To determine the largest decimal among the options, you need to compare them by looking at the digits after the decimal point. When comparing 0.6, 0.667, 0.0688, and 0.68, consider that 0.6 is equivalent to 0.600, 0.667 remains 0.667, 0.0688 is already in its most precise form, and 0.68 is the same as 0.680. By comparing them, you can see that 0.68 is the largest decimal among the options provided. Remember, when comparing decimals, it's important to line up the decimal points to make accurate comparisons.
Subtract: 32.21 - 4.68 =
- A. 14.53
- B. 27.53
- C. 1.459
- D. 27.53
Correct Answer: D
Rationale: To subtract decimals, align the decimal points and subtract each place value. Starting from the right, 1 - 8 requires borrowing from the tens place, resulting in 11 - 8 = 3. Then, 2 - 6 requires borrowing from the tens place again, resulting in 12 - 6 = 6. The result is 27.53. Therefore, the correct answer is 27.53 (Option D). Remember to be careful with decimal alignment and borrowing when subtracting decimals.
Rounded to the nearest whole number, what is 17 out of 68 as a percentage?
- A. 17%
- B. 25%
- C. 32%
- D. 68%
Correct Answer: B
Rationale: To convert a fraction to a percentage, divide the numerator by the denominator and multiply by 100. In this case, (17 · 68) — 100 = 25%. Therefore, when rounded to the nearest whole number, 17 out of 68 as a percentage is 25%.