D. Identify the unknown as percentage, rate, or base, then solve. (2 points each)

16-17, 9% of what number is 15?
18-19. 18% of what number is 360?
20-21. 16% of 82 is what number?
22-23. What % of 80 is 68?
24-25, 40 is what percent of 95?​