At 15:15 pm railway time, what will be the angle between minute and hour hand?

a) 0 degree
b) 180 degrees
c) 360 degrees
d) both a and c

• consider a clock..
  1) for minute hand...
  in 60 min it covers 360 degree
  so in one min it covers 360/60= 6 degree
  2) for hour hand...
  in 12 hours it covers 360 degree
  in 60 min it covers 360/12= 30 degree
  so in 1 min it covers 30/60= .5 degree
  NOW..
  consider the vertical line joining 12pm and 6pm
  at 3:15, min hand covers 90 degree from vertical line
  and since the hour hand had already covered 90 degree at 3:00 so in further 15 min it covers .5*15= 7.5 degree.
  so total angle made bby hour hand with vertical line is 90+7.5=97.5 degree.
  SO ANGLE MADE B/W MIN HAND AND HOUR HAND IS 97.5-90= 7.5 DEGREE.
  
  SINCE NO OPTION MATCHES, HENCE IT IS A DUMMY QUESTION.
• 12 years agoHelpfull: Yes(15) No(2)
• how come both will be at same line? at 3:15 the angle is slightly away from one another no ... could u plz explain me...
• 12 years agoHelpfull: Yes(7) No(2)
• ans is 0....
• 12 years agoHelpfull: Yes(5) No(4)
• it should be both a & c
• 12 years agoHelpfull: Yes(3) No(5)
• H- hours
  M- minutes.
  The formula is MOD[30H-5.5M]
  
• 12 years agoHelpfull: Yes(1) No(5)
• guys!! its railway timing..so no minute or hour hand.. digital display clock..so ans is 0 ( as the best possible option)
  
• 9 years agoHelpfull: Yes(1) No(0)
• At 15:15 both minute and hour hands will be in same position. Hence the angle between them will be zerodegrees. However 360 degree also means both minute and hour hands are in same position. Hence correct answers are
  both zero and 360 degrees
  Ans: d) both a and c
• 7 years agoHelpfull: Yes(1) No(0)
• For 360 degree rotation of minute hand,hour hand rotates 30 degree.
  Ratio of hour hand:minute hand=30:360=1:12
  Here,minute hand rotates 90 degree.
  1:12=x:90
  12x=90
  x=7.5 degree
• 10 years agoHelpfull: Yes(0) No(0)
• At 15:15 both minute and hour hands will be in same position. Hence the angle between them will be zero
  degrees. However 360 degree also means both minute and hour hands are in same position. Hence correct answers are
  both zero and 360 degrees
• 7 years agoHelpfull: Yes(0) No(0)
• An hour is 1/12 of a circle, i.e. 360/12 = 30 degrees. So in one minute, the hour hand moves 1/60 of this, i.e. 0.5 degrees. In 15 minutes, it moves 0.5 x 15, = 7.5 degrees from the "3" mark. Since the minute hand is exactly on the "3" mark, the angle between hour and minute hand will be 7.5 degrees.
• 6 Months agoHelpfull: Yes(0) No(0)