15. 75 s̶i̶n̶c̶e̶ 20.00 p̶o̶u̶n̶d̶s̶ - 4a̶n̶d̶ 25 p̶o̶u̶n̶d̶s̶ e̶q̶u̶a̶l̶ 15.75 p̶o̶u̶n̶d̶s̶
Answer:
138 students
Step-by-step explanation:
207/9 = 23
23*6=138
Times 4 because, 5 times 4 is 20, 20 times 4 is 80 and so on.
Can you explain it more clear because my english is not very good, I want to easy to help you
There were 40 advance tickets sold, and 30 same-day tickets sold.