- A105°
- B900°
- C75°
- D150°
Step-by-Step Solution
A shows 10:40 and B shows 1:10, so 2 h 30 min pass. The hour hand turns per hour: . (900° is the minute hand's turn; 150° doubles the rate.)
Answer: C) 75°
Clock A shows when a bank opens its locker room in the morning and clock B when it closes later the same day. Through what angle does the hour hand turn in between?
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