HESI A2 Practice Test Math

Correct Answer: A

Rationale: To find the full number, we can set up the equation: 0.30x = 18, where x is the full number. Solving for x, we get x = 18 / 0.30 = 60. Therefore, the correct answer is A (60). Choice B (30): 0.30 of 30 is 9, not 18. Choice C (40): 0.30 of 40 is 12, not 18. Choice D (45): 0.30 of 45 is 13.5, not 18.

Correct Answer: A

Rationale: To find the total weight, multiply the number of boxes by the weight of each box. 36 boxes * 2.5 pounds = 90 pounds. Option A is correct because it correctly calculates the total weight. Option B (75 pounds) is incorrect as it doesn't account for all 36 boxes. Option C (120 pounds) is incorrect as it overestimates the weight. Option D (100 pounds) is incorrect as it underestimates the weight by not considering all boxes.

Correct Answer: A

Rationale: To subtract mixed numbers, convert them to improper fractions. 3 4/5 = 19/5 and 7 7/10 = 77/10. Subtracting gives 19/5 - 77/10 = 38/10 - 77/10 = -39/10. Convert back to a mixed number: -39/10 = -3 9/10 (choice A). Other choices are incorrect as they do not match the correct result.

Correct Answer: B

Rationale: The correct answer is B: 5.3 hours. To calculate the total time taken, we sum up the time taken for each set of 6 miles: 1 hour + 1.2 hours + 1.5 hours + 1.6 hours = 5.3 hours. This is the correct answer because it accounts for the time taken for each segment of the 24-mile course. Choice A: 5 hours is incorrect because it does not include the time taken for the last 6 miles. Choice C: 4 hours is incorrect as it is the time taken for only the first 18 miles, excluding the final 6 miles. Choice D: 6 hours is incorrect as it overestimates the total time taken by including additional time not accounted for in the question.

Correct Answer: A

Rationale: To find the number of plots, divide the total land by the size of each plot: 56 acres ÷ 0.25 acres/plot = 224 plots (Option A). This is correct as it follows the basic concept of division. Option B, C, and D are incorrect as they do not result from the correct division calculation.