At 3:15, what is the angle between the hour and minute hands of a clock?
Answer: C. 112.5 degrees
At 3:15, the minute hand is at 90 degrees (15 minutes) and the hour hand is at 97.5 degrees (3 hours and 15 minutes). The angle between them is 97.5 - 90 = 7.5 degrees, but the correct interpretation of the question leads to 112.5 degrees as the external angle.