HESI A2 Math Practice Exam

Correct Answer: B

Rationale: To calculate the percentage Jill saved, we divide the amount saved ($140) by her total earnings ($400) and multiply by 100. So, (140/400) * 100 = 35%. Choice B is correct as it accurately represents the percentage of earnings saved. Choice A (30%) is incorrect because it's lower than the actual percentage saved. Choice C (40%) is incorrect because it's higher than the actual percentage saved. Choice D (25%) is also incorrect because it's lower than the actual percentage saved.

Correct Answer: B

Rationale: The correct answer is B: MCMVI. Here's the rationale: 1. M represents 1000, CM represents 900, and VI represents 6. 2. Combining these symbols, MCMVI represents 1000 (M) + 900 (CM) + 6 (VI) = 1906. 3. Option A (MCMIV) is incorrect as IV represents 4, not 6. 4. Option C (MDCCCCVI) is incorrect as it uses the subtractive notation excessively (900 + 100 + 100 + 100 + 100 + 5 + 1). 5. Option D (MCMVII) is incorrect as VII represents 7, not 6.

Correct Answer: B

Rationale: To find the cost of 4 roses, we divide the total cost of 12 roses by 12 to get the cost of 1 rose ($36 / 12 = $3). Then, we multiply the cost of 1 rose by 4 to find the cost of 4 roses ($3 * 4 = $12). Therefore, the correct answer is B. Choice A ($9) is incorrect as it assumes a linear relationship between the number of roses and the cost, which is not the case. Choice C ($10) and Choice D ($15) are also incorrect as they do not follow the correct calculation method.

Correct Answer: B

Rationale: To calculate the percentage Jill saved, we divide the amount saved ($140) by her total earnings ($400) and multiply by 100. So, (140/400) * 100 = 35%. Choice B is correct as it accurately represents the percentage of earnings saved. Choice A (30%) is incorrect because it's lower than the actual percentage saved. Choice C (40%) is incorrect because it's higher than the actual percentage saved. Choice D (25%) is also incorrect because it's lower than the actual percentage saved.

Correct Answer: B

Rationale: The correct answer is B: 1:00 AM. In military time, 0100 translates to 1:00 AM. When converting military time to standard time, you simply drop the leading zero and read the remaining numbers as a regular time. Choice A is incorrect because it is vague and not a specific time. Choice C is incorrect as 3:00 AM is not represented by 0100 in military time. Choice D is incorrect because 12:30 AM is not the equivalent of 0100 in military time.