Answer:
The percentage of tickets sold was 70%, while the percentage of tickets not sold was 30%.
Explanation:
Given that the Cinema has 400 tickets to sell for the upcoming movie, of which there were 280 tickets sold, to determine the percentage of tickets sold and tickets not sold with respect to the total, the following calculation must be performed:
400 = 100
280 = X
(280 x 100) / 400 = X
28,000 / 400 = X
70 = X
Thus, the percentage of tickets sold was 70%, while the percentage of tickets not sold was 30%.