A test has questions, and a student answers correctly. What percent of the questions did the student answer correctly?
- (correct answer)
Explanation: We need to find what percent 30 correct answers is out of 40 total questions. To find what percent one number is of another, use (part/whole) × 100. Here: (30/40) × 100 = 0.75 × 100 = 75%. Choice A (25%) incorrectly uses the difference (10/40) instead of the part over the whole.