A student got 72% in math and 82% in history. To get an overall average of 75%, how much should the student get in the third subject?
Choose the correct choice.
A) 69 %
B) 71 %
C) 73 %
D) 75 %
E) 77 %

Rationale: "72 + 82 + x = 3 * 75 x = 71 the answer is b ."
Answer: B