On the planet Oz, there are 8 days in a week- Sunday to Saturday and another day called Oz day. There are 36 hours in a day and each hour has 90 min while each minute has 60 sec. As on earth, the hour hand covers the dial twice every day. Find the approximate angle between the hands of a clock on Oz when the time is 12:40 am.

• bhai ans habe 89 deg
  
  36hrs a day mane the clk will b of 18hrs.
  18hrs covrs 360deg
  thus 1hr covrs 20deg
  12 hrs covrs 12*20=240deg
  ekhon,1 hr in 90min
  thus in 90min the hour hand goes 20deg
  tai, for 1min hr hand goes 2/9deg
  sei jonne, for 40 min hour hnd goes (2/9)*40deg=80/9deg=9deg(approx)
  thus hr hand covrs total of 240+9=249deg
  now min hand covrs=40*4=160deg
  (karon, 90min=360deg
  1min=4deg)
  
  thus angle betwn them 249-160=89deg :)
  
• 14 years agoHelpfull: Yes(100) No(4)
• "First we are taking the hour hand"
  as the hand covers the dial twice every day so..
  18hr have 360 degree
  1hr have 360/18 degree = 20 degree
  so 12 hr have 12*20 degree=240 degree
  also given 1hr = 90 min
  so 90min= 20 degree
  1min = 20/90 =2/9 degree
  so 40 min= 40*(2/9)=8.88(aprox)
  so total angel coverd by the hour hand is=240+8.88=248.88 degree
  "NOW WE consider the minute hand"
  90 min = 360 degree
  so 1 min= 360/90=4 degree
  so 40 min= 40*4= 160 degree
  so finaly the angel covered by the hour hand is= 248.88 degre
  and the angel covered by minute hand is = 160 degree
  so the angel between the hands is= 248.88-160=88.88 or 89 degre(aprox)
• 13 years agoHelpfull: Yes(18) No(2)
• use formula.. 20h-34/9m for these type of problems
  where m= minutes here it is 40
  and h= hours here it is 12
  ans=89 deg
• 14 years agoHelpfull: Yes(11) No(22)
• 88.88...=89
  coz...
  angle = (12/18*360 +40/90*20 )- 40/90*360
• 14 years agoHelpfull: Yes(7) No(1)
• Refer to the puzzle #M40000579 for ans
• 14 years agoHelpfull: Yes(2) No(9)