At what time between 5 and 6 o’clock will the hands of a clock first make an angle of 30°?
Correct answer B. 21 9/11 minutes past 5
Explanation
First 30° occurs when 150 − 5.5M = 30, so M = 120/5.5 = 240/11 = 21 9/11. The time is 21 9/11 minutes past 5.
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