Math HESI A2 Practice Test

Correct Answer: B

Rationale: The correct answer is B (2.8 liters) because 1 quart is equivalent to 0.946 liters. Therefore, 3 quarts would be 3 * 0.946 = 2.838 liters, which is closest to 2.8 liters. Choice A (3.0 liters) is incorrect because it does not accurately convert quarts to liters. Choice C (2.5 liters) is incorrect as it underestimates the conversion. Choice D (3.5 liters) is incorrect as it overestimates the conversion. The most accurate conversion is 2.8 liters, making it the correct answer.

Correct Answer: A

Rationale: To find the time to wash 100 cars, we can set up a proportion: 30 cars / 15 minutes = 100 cars / x minutes. Cross multiply to get 30x = 1500, then divide by 30 to find x = 50 minutes. Therefore, the correct answer is A. Choice B, 55 minutes, is incorrect as it does not align with the calculation. Choice C, 30 minutes, is incorrect as it is the time to wash 60 cars, not 100. Choice D, 45 minutes, is incorrect as it does not match the calculated time of 50 minutes for washing 100 cars.

Correct Answer: A

Rationale: The correct answer is A: 1/6. There is only one outcome of rolling a 2 on a six-sided die, and there are a total of six possible outcomes (1, 2, 3, 4, 5, 6). Therefore, the probability of rolling a 2 is 1 out of 6, which simplifies to 1/6. Explanation for why other choices are incorrect: B: 1/4 - This is incorrect because there is only one outcome of rolling a 2, not 2 outcomes out of 6. C: 1/3 - This is incorrect because the probability of rolling a 2 is not 1 out of 3, but 1 out of 6. D: 1/2 - This is incorrect because the probability of rolling a 2 is not 1 out of 2, but 1 out of 6.

Correct Answer: A

Rationale: To convert milliliters to liters, we divide by 1000 since 1 liter = 1000 milliliters. So, 2500 milliliters ÷ 1000 = 2.5 liters. Therefore, the correct answer is A: 2.5 liters. Explanation for other choices: B: 1.5 liters - Incorrect, obtained by incorrect division. C: 3.5 liters - Incorrect, obtained by adding instead of dividing. D: 0.25 liters - Incorrect, obtained by misplaced decimal point.

Correct Answer: A

Rationale: To produce 6 eggs in 24 hours, 2 chickens are needed. Therefore, to produce 24 eggs, we need (2 chickens / 6 eggs) * 24 eggs = 8 chickens. So, the correct answer is A. Choice B is incorrect because it does not account for the correct ratio of chickens to eggs. Choice C is incorrect as it overestimates the number of chickens needed. Choice D is incorrect as it does not consider the ratio of chickens to eggs accurately.