At what time between 4 and 5 o'clock the hands are in opposite direction?

a) 10 2/11 minutes past 4 o'clock
b) 3 2/11 minutes past 4 o'clock
c) 3 5/11 minutes past 4 o'clock
d) 10 10/11 minutes past 4 o'clock

• hands are opposite,angle=180 deg
  so,
  angle=11/2(min)-30(h)
  => 180=11/2(min)-30(4)
  => 180+120=11/2(min)
  => (300*2)/11=min
  => min=54 6/11min past 4
• 8 years agoHelpfull: Yes(11) No(2)
• ANS is d:10 10/11 minutes past 4 o clock ,because for opposite direction angle should be 30 between hour hand and minute.
  at 40 clock it is 20 minutes apart,
  :so 10 minutes space are covered by =60/55*10=10 10/11ans
• 8 years agoHelpfull: Yes(5) No(11)