Free NEX Mathematics Questions and Answers

Question 1

A medication is supplied as 120 mg in 4 mL. A patient requires a dose of 150 mg. How many mL should the nurse administer?

Accepted Answer

5 mL

Answer

This is a ratio and proportion problem. Set up the equation (120 mg / 4 mL) = (150 mg / x mL). Cross-multiply to get 120x = 150 * 4, which simplifies to 120x = 600. Solve for x by dividing 600 by 120, which equals 5 mL.

Question 2

A patient's fluid intake was 1,200 mL, and their fluid output was 900 mL. What is the ratio of intake to output in its simplest form?

Accepted Answer

4:3

Answer

The initial ratio is 1200:900. To simplify a ratio, find the greatest common divisor (GCD) for both numbers. Both 1200 and 900 can be divided by 300. 1200 / 300 = 4, and 900 / 300 = 3. Therefore, the simplest form of the ratio is 4:3.

Question 3

A patient's weight decreased from 200 pounds to 175 pounds after a new diet and exercise plan. What was the percentage decrease in the patient's weight?

Accepted Answer

12.5%

Answer

First, find the amount of weight lost: 200 - 175 = 25 pounds. To find the percentage decrease, use the formula: (Amount of Decrease / Original Amount) * 100. So, (25 / 200) * 100 = 0.125 * 100 = 12.5%.

Question 4

A nursing unit has 80 staff members. If 15% of the staff are on vacation, how many staff members are working?

Accepted Answer

68

Answer

First, calculate the number of staff on vacation: 80 * 0.15 = 12. Then, subtract the number of staff on vacation from the total staff to find who is working: 80 - 12 = 68. Alternatively, if 15% are on vacation, 85% are working. 80 * 0.85 = 68.

Question 5

A solution of disinfectant requires 2 parts concentrate to 7 parts water. If you need to make a total of 450 mL of solution, how much concentrate do you need?

Accepted Answer

100 mL

Answer

The total number of 'parts' in the solution is 2 + 7 = 9 parts. The proportion of concentrate is 2 out of 9 parts. To find the amount of concentrate needed for 450 mL, calculate (2/9) * 450. (450 / 9) = 50, and 50 * 2 = 100 mL.

(NEX) Nursing Entrance Exam Practice Test

(NEX) Nursing Entrance Exam Practice Test

Free NEX Mathematics Questions and Answers