HESI A2 Math

Questions 45

HESI A2

HESI A2 Test Bank

HESI A2 Math Questions

Question 1 of 5

A marathon runner completes 21.6 miles and burns 2,274 calories. What is the rate of calories burned per mile?

Correct Answer: A

Rationale: To find the rate of calories burned per mile, divide the total calories burned by the total distance covered. In this case, 2,274 calories ÷ 21.6 miles = 105.28 calories per mile (rounded to two decimal places), which matches option A. This calculation is based on the fundamental concept of division, where the total calories are distributed evenly over the total distance. Choices B, C, and D are incorrect as they do not match the calculated rate. This question tests basic division skills and understanding of calculating rates.

Question 2 of 5

If Larry can wash 50 cars in 20 minutes, how many minutes will it take him to wash 80 cars?

Correct Answer: B

Rationale: To find the time to wash 80 cars, we use the formula: Time = (Number of cars * Time taken for 1 car)/(Number of cars washed in that time). Time = (80 * 20)/(50) = 32 minutes. Choice B is correct. Choice A is incorrect as it assumes the time taken is constant. Choice C and D are incorrect as they do not consider the increase in the number of cars to be washed.

Question 3 of 5

A medication must be taken twice daily, 12 hours apart. If the first dose is at 8:00 AM, what is the most convenient time for the second dose to avoid disrupting sleep?

Correct Answer: B

Rationale: The correct answer is B (6:00 PM). Taking the medication 12 hours apart from the first dose at 8:00 AM ensures it's evenly spaced throughout the day. 6:00 PM is the most convenient time as it allows for the second dose without disrupting sleep, as it falls after dinner but before bedtime. Choice A (4:00 PM) is too early, which may lead to missing the second dose during the evening. Choices C (8:00 PM) and D (10:00 PM) are too late and might interfere with sleep if taken too close to bedtime. Thus, B is the best option for maintaining the medication schedule effectively.

Question 4 of 5

Solve for x: x/250 = 3/500

Correct Answer: A

Rationale: To solve for x, we can cross multiply: x * 500 = 250 * 3. Simplifying gives x = 750 / 500 = 1.5. Therefore, the correct answer is A. Choice B (25.5) is incorrect as it doesn't match the calculation. Choice C (1500) is incorrect as it is the product of 500 and 3, not the value of x. Choice D (2.5) is incorrect as it doesn't align with the correct calculation.

Question 5 of 5

Is a potassium level of 4.5 millimoles per liter (mmol/L) within the normal range of 3.5 to 5.3 mmol/L?

Correct Answer: B

Rationale: The correct answer is B: Yes, it is within the normal range. A potassium level of 4.5 mmol/L falls within the normal range of 3.5 to 5.3 mmol/L. Therefore, it is not too low (Option A) or too high (Option C). Additional information is not required to determine that 4.5 mmol/L is within the normal range, making Option D incorrect.

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