Final answer:
To find the percentage of tickets sold by you, divide the number of tickets you sold by the total number of tickets sold and multiply by 100. Repeat this process for each day and for both days combined.
Step-by-step explanation:
a. To find the percent of tickets you sold on Thursday, divide the number of tickets you sold (15) by the total number of tickets sold (15 + 10 = 25). Then multiply the result by 100 to find the percentage.
b. To find the percent of tickets you sold on Friday, follow the same steps as in part (a), using the number of tickets sold on Friday (9) and the total number of tickets sold on Friday (9 + 16 = 25).
c. To find the percent of total tickets sold on both Thursday and Friday that you sold, add the number of tickets you sold on both days (15 + 9 = 24) and divide it by the total number of tickets sold (25 + 25 = 50). Then multiply the result by 100 to find the percentage.