Final answer:
To find the percentage increase, subtract the number of participants last year from this year and calculate the percentage of that difference. The percentage increase in attendance from last year to this year is 40.8%.
Step-by-step explanation:
To find the percentage increase in the attendance from last year to this year, we need to find the difference in the number of participants and then calculate the percentage of that difference.
First, we find the difference by subtracting the number of participants last year (1250) from the number of participants this year (1760): 1760 - 1250 = 510.
Next, we calculate the percentage increase by dividing the difference (510) by the number of participants last year (1250) and multiplying by 100: (510/1250) * 100 = 40.8%
Therefore, the percentage increase in attendance from last year to this year is 40.8%, which corresponds to option B.