The cost of a concert ticket last week was $60.00. This week a concert ticket is $75.00. What is the percent increase of the ticket from last week to this week?

A.
8%

B.
15%

C.
20%

D.
25%

The percent increase from last week to this week is 25% ((75-60)/60 * 100 = 25%).

Therefore, the answer is D. 25%.