M

Mr. Dubey • 100.64K Points
Coach Math

Q. The angle between the minute hand and the hour hand of a clock when the time is 8.30, is

  • (A) 65
  • (B) 75
  • (C) 85
  • (D) 90
  • Correct Answer - Option(B)
  • Views: 114
  • Filed under category Math
Explanation by: Mr. Dubey
At 8 o’ clock, the hour hand is at 240 degrees from the vertical.
In 30 minutes,
Hour hand = 240 + 30 x (0.5) = 240 + 15 = 255 (The hour hand moves at 0.5 dpm)
Minute hand = 30 x (6) = 180 (The minute hand moves at 6 dpm)
Difference or angle between the hands = 255 - 180 = 75 degrees.

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