At last month's trivia competition, 20 questions were about history and geography, and the other 35 questions were about pop culture. This month, the number of history and geography questions increased by 15%, while the number of pop culture decreased by 20%.
Find the percent change in total number of questions from last month to this month.
A.
The total number of questions decreased by about 4%.
B.
The total number of questions increased by about 17.5%.
C.
The total number of questions increased by about 8%.
D.
The total number of questions decreased by about 7%.