Final answer:
To determine the average number of puzzles one student would complete, divide the total number of puzzles (80) by the total number of students (15) resulting in 5.333... When rounded to the nearest tenth, it is 5.3 puzzles per student.
Step-by-step explanation:
If fifteen students completed 80 puzzles in total, then to find out how many puzzles one student would complete on average, we need to divide the total number of puzzles by the number of students.
The calculation is as follows:
- Take the total number of puzzles completed, which is 80.
- Divide this number by the number of students, which is 15.
- The result is the average number of puzzles one student would complete.
80 puzzles ÷ 15 students = 5.333...
Rounding to the nearest tenth, one student would complete 5.3 puzzles on average.