ATI TEAS (Test of Essential Academic Skills) Version 7MathematicsEasy
A clinic's patient waiting room has 15 chairs. On average, 60% of the chairs are occupied during peak hours. How many chairs are typically empty during peak hours?
- A6 chairs
- B12 chairs
- C3 chairs
- D9 chairs
Show answer & explanationAnswer & explanation
Correct answer: A. 6 chairs
If 60% of the chairs are occupied, then 100% - 60% = 40% of the chairs are empty. Calculate 40% of 15 chairs: 0.40 * 15 = 6 chairs.
Why the other options are wrong
- B. Incorrect calculation.
- C. Incorrect calculation.
- D. This is the number of occupied chairs (60% of 15).
Percentage Calculation
A mathematical operation to find a part of a whole expressed as a fraction of 100.
- Percentages are often used to represent proportions or rates.
- To calculate a percentage of a number, convert the percentage to a decimal and multiply.
- The whole represents 100%.
Memory trick: Percent means 'per hundred' – convert to decimal, then multiply.