ATI TEAS (Test of Essential Academic Skills) Version 7MathematicsMedium
A nurse is tracking a patient's weight. The patient's weight increased from 150 lbs to 165 lbs over a month. What is the percentage increase in the patient's weight?
- A10%
- B20%
- C15%
- D5%
Show answer & explanationAnswer & explanation
Correct answer: A. 10%
To calculate the percentage increase, first find the absolute increase: 165 lbs - 150 lbs = 15 lbs. Then divide the increase by the original weight and multiply by 100: (15 lbs / 150 lbs) * 100 = (1/10) * 100 = 10%.
Why the other options are wrong
- B. This indicates a significant calculation error, possibly dividing by 75 instead of 150.
- C. This is the absolute increase in pounds, not the percentage increase.
- D. This is likely a miscalculation, perhaps dividing by 300 instead of 150.
Percentage Increase Calculation
Determining the relative growth of a quantity, calculated as the increase divided by the original quantity, expressed as a percentage.
- Calculate the absolute increase: New Value - Original Value.
- Divide the absolute increase by the Original Value.
- Multiply by 100 to express as a percentage.
Memory trick: New minus Old, divided by Old, times 100, makes the story told.