HESI Mathematics

HESI Mathematics Related

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A man is 6'4' tall and weighs 228 pounds. The ideal weight chart indicates that his maximum desirable weight is 204 pounds. What percentage overweight is this man?

  • A. 16.50%
  • B. 20%
  • C. 10%
  • D. 2%
Correct Answer: C

Rationale: To calculate the percentage overweight:
1. Find the excess weight: 228 lbs - 204 lbs = 24 lbs.
2. Calculate the percentage: (24 lbs / 204 lbs) * 100 = 11.76%
3. Choose the closest option, which is C: 10%.
The correct answer is C (10%) because it represents the closest rounded percentage to the calculated 11.76%. Other choices are incorrect as they do not reflect the accurate percentage of excess weight.

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How many liters are in 5000 milliliters? (Enter numeric value only.)

  • A. 0.5L
  • B. 50L
  • C. 5L
  • D. 500L
Correct Answer: C

Rationale: Correct Answer: C (5L)

Rationale:
1. 1 liter = 1000 milliliters.
2. To convert 5000 milliliters to liters, divide 5000 by 1000.
3. 5000 ml ÷ 1000 = 5 liters.
4. Therefore, there are 5 liters in 5000 milliliters.

Summary:
- A (0.5L): Incorrect, as dividing 5000 ml by 1000 equals 5L, not 0.5L.
- B (50L): Incorrect, as the conversion from milliliters to liters is 1:1000.
- D (500L): Incorrect, as dividing 5000 ml by 1000 equals 5L, not 500L.

Subtract: 9/12 - 3/12

  • A. 1/3
  • B. 1/2
  • C. 1/4
  • D. 1/6
Correct Answer: B

Rationale: To subtract fractions with the same denominator, subtract the numerators. In this case, 9/12 - 3/12 = (9-3)/12 = 6/12. Then, simplify the fraction by dividing both the numerator and denominator by their greatest common factor, which is 6. Thus, 6/12 simplifies to 1/2.

How many ounces are in 8 1/4 pints?

  • A. 132 oz
  • B. 140 oz
  • C. 148 oz
  • D. 156 oz
Correct Answer: A

Rationale: To convert pints to ounces, we use the conversion factor that 1 pint equals 16 ounces. To find the number of ounces in 8 1/4 pints, we multiply 8.25 pints by 16 ounces/pint: 8.25 * 16 = 132 ounces. Therefore, there are 132 ounces in 8 1/4 pints.

Subtract: 12 1/8 - 9 1/2 =

  • A. 2 5/8
  • B. 2 1/8
  • C. 3 3/8
  • D. 3 5/8
Correct Answer: A

Rationale: To solve this problem, first convert the mixed numbers to improper fractions. 12 1/8 can be written as 97/8, and 9 1/2 can be written as 19/2. Ensure a common denominator (8) by rewriting 19/2 as 76/8. Now, subtract the fractions: 97/8 - 76/8 = 21/8 = 2 5/8. Therefore, the correct answer is 2 5/8.

A woman received a bottle of perfume as a present. The bottle contains 3/4 oz of perfume. How many milliliters is this?

  • A. 20.0 ml
  • B. 23.0 ml
  • C. 22.5 ml
  • D. 22.0 ml
Correct Answer: C

Rationale: To convert ounces to milliliters, we know that 1 fluid ounce (oz) is approximately equal to 29.5735 milliliters (ml). Therefore, 3/4 oz of perfume is equal to (3/4) x 29.5735 ml. Calculating this gives us approximately 22.18 ml, which can be rounded to 22.5 ml. Hence, the correct answer is 22.5 ml. This conversion is essential in various fields, especially in industries where precise measurements are required, such as pharmaceuticals, chemistry, and cooking.

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