Final answer:
To calculate the unit rate of puzzles completed by Tara, you divide the total number of puzzles (4) by the total hours (2), resulting in a unit rate of 2 puzzles per hour.
Step-by-step explanation:
The student asks about determining a unit rate, which is a measure of the number of puzzles completed per unit of time. To find the unit rate, we simply divide the total number of puzzles by the total number of hours. In this case, Tara completes 4 puzzles in 2 hours.
Steps to calculate the unit rate:
- Identify the total number of activities completed, which is 4 puzzles.
- Identify the total time taken, which is 2 hours.
- Divide the number of puzzles by the number of hours: 4 puzzles ÷ 2 hours = 2 puzzles per hour.
Therefore, the unit rate is 2 puzzles per hour.