211

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At what time between 1pm and 2pm do the minute hand and the hour hand of a clock coincide exactly?

who

who's Avatar

3 years ago

Answers

  • Nate
  • -  461 pts
  • -  (3 years ago)

Golly... is it 1:12? Gotta' be around there somewhere give or take a minute.

  • knewk
  • -  388 pts
  • -  (3 years ago)

Little algebra? x being the number of minutes after 1 o'clock that the arms line up. The units I used were in rotations.

1/12 + (1/12)(1/60)x = (1/60)x
1/12 + (1/720) x = (12/720)x
1/12 = (11/720)x
x = 720/11/12
x = 5 45/99
x = 5 27.27/60

1:05:27.27

Kenbo's Avatar
  • Kenbo
  • -  6965 pts
  • -  (3 years ago)

wow, good job.

who's Avatar
  • who
  • -  1144 pts
  • -  (3 years ago)

Correct! I would have said 'an 1/11hr past one' but I'm just analogue all over.

  • Guest
  • -  0 pts
  • -  (8 months ago)

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