What is the angle formed by the hands of a clock at exactly 3:15?
7.5 degrees
At 3:15, the minute hand is pointing exactly at 3 (90 degrees). The hour hand has moved 1/4 of the way between 3 and 4. Since each hour mark represents 30 degrees (360/12), 1/4 of 30 is 7.5 degrees past 3. Thus, the angle is 7.5 degrees.
About this riddle
Math riddles hide a calculation inside a short story. Pull out the numbers, work out what is being asked, and watch for a trick such as a unit change.
Difficulty: Hard. More like this: Math riddles with answers or try Target 24 for a different kind of puzzle.
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