TEAS Test Math Prep

Correct Answer: C

Rationale: The correct answer is C (40%). To calculate the percentage of total sales from CDs, you need to divide the number of CD sales by the total sales of all formats (CDs + vinyl + MP3). In this case, let's say CD sales were 400 units, vinyl sales were 300 units, and MP3 sales were 300 units, making the total sales 1000 units. To find the percentage of CD sales, divide 400 by 1000 and multiply by 100, yielding 40%. Choice A (55%) is incorrect as it overestimates CD sales. Choice B (25%) and Choice D (5%) are incorrect as they underestimate CD sales.

Correct Answer: B

Rationale: To round 89632 to the nearest hundred, we look at the digit in the hundreds place, which is 6. Since 6 is greater than or equal to 5, we round up the hundreds place to the next hundred, making it 900. The correct answer is B. Choice A: 847.9 - Incorrect. This is not a correct rounding of 89632 to the nearest hundred. Choice C: 847.89 - Incorrect. This answer is not related to the rounding of 89632 to the nearest hundred. Choice D: 847.896 - Incorrect. This answer is not related to the rounding of 89632 to the nearest hundred.

Correct Answer: B

Rationale: To calculate the percentage increase, we subtract the original value from the new value (60 - 40 = 20), then divide this difference by the original value (20 / 40 = 0.5). Finally, multiply this result by 100 to get the percentage increase, which is 50%. Choice B is correct as it accurately represents the percentage increase from 40 to 60. Choices A, C, and D are incorrect because they do not provide the correct percentage increase calculation based on the given values.

Correct Answer: B

Rationale: To round 2678 to the nearest thousandth, we look at the digit in the thousandth place, which is 6. Since the next digit is 7, we round 6 up to 7. The thousandth place is used to decide whether to round up or down in this case. Choices A, C, and D are incorrect as they refer to other place values that are not relevant when rounding to the nearest thousandth.

Correct Answer: C

Rationale: To reach $300, Bernard needs to work for $300 / $80 = 3.75 days. Since he can only work full days, he needs to work for 4 days to make at least $300. Thus, the correct answer is C. Option A (2 days), B (3 days), and D (5 days) are incorrect as they do not meet the minimum requirement of $300.