Final answer:
After calculating the unit rates, the ratios 10 visitors: 15 days and 7 visitors: 11 days are found to be not equivalent, as 0.6667 visitors per day is not equal to 0.6364 visitors per day.
Step-by-step explanation:
To determine if the ratios 10 visitors: 15 days and 7 visitors: 11 days are equivalent, we can simplify them by dividing both the number of visitors and the number of days by their greatest common divisor, or alternatively, we can calculate both ratios as unit rates (visitors per day) and compare them.
For the first ratio:
- 10 visitors / 15 days = 0.6667 visitors per day (approximately).
For the second ratio:
- 7 visitors / 11 days = 0.6364 visitors per day (approximately).
Since 0.6667 is not equal to 0.6364, we can conclude that the ratios are not equivalent.