ATI TEAS (Test of Essential Academic Skills) Version 7MathematicsHard
A patient's blood glucose level is measured at 180 mg/dL. The target range for this patient is 80-120 mg/dL. What percentage above the target maximum is the patient's current blood glucose level?
- A33.3%
- B50.0%
- C75.0%
- D66.7%
Show answer & explanationAnswer & explanation
Correct answer: B. 50.0%
The target maximum is 120 mg/dL. The patient's level is 180 mg/dL. The difference is 180 - 120 = 60 mg/dL. To find the percentage above the target maximum, divide the difference by the target maximum: (60 / 120) * 100% = 0.5 * 100% = 50.0%.
Why the other options are wrong
- A. Incorrect; possibly calculated as (180-120)/180, which is incorrect.
- C. Incorrect; suggests a calculation error, perhaps using the wrong reference point.
- D. Incorrect; likely a significant miscalculation or using the wrong base for the percentage.
Percentage Deviation from Reference
Calculating how far a value deviates from a specified reference point, expressed as a percentage of that reference.
- Requires identifying the reference point (e.g., target maximum).
- Calculate the absolute difference between the value and the reference.
- Divide by the reference point, then multiply by 100 to get a percentage.
Memory trick: Difference Over Target Max, then Times a Hundred, no turning back!