单选题 The promoters of the Springfield music festival estimated a 50 percent increase in ticket sales from last year, but because of bad weather, ticket sales actually decreased by 25 percent from last year's level. What percent of the projected ticket sales were the actual ticket sales?
A. 45
B. 50
C. 55
D. 65
E. 75

【正确答案】 B

【答案解析】If last year's sales were S, the projected sales were 1.5S, and actual sales were 0.75S. 0.75S/1.5S=0.5=50%.