In planet OZ planet there are 8 days, Sunday to Saturday and 8th day is Oz day. There is 36 hours in a day. What is angle between 12.40?
a) 80 b) 81 c) 87 d) 89
Explain??

• ans is 89
  the oz planet has a clock of 18 hours so ter is 36 hrs per day
  total angle is 360 degree, therefore for 1 hour it is 360/18 =20
  so 1 hour = 20
  but 1 hour has 90 min
  so 90 min= 20
  so for 1 min it is, 20/90 =0.22222
  so 1 min=0.222
  at 12.40,
  i) 12-8=4
  8 is bcoz at 40th min the clock stikes at 8
  for 1 min it is 20, therefore for 4 it is 4*20=80
  ii) at 12.40,
  40*0.2222=8.8888
  
  therefore the solution is i+ii = 80+8.888 =88.88 =89.
• 13 years agoHelpfull: Yes(30) No(6)
• formula is:if day is in n hours
  step 1: 1 hour=360/(n/2)=x degree
  step 2: one min=x/min contain in every hour
  step 3: one min=360/min contain in every hour
  step 4: difference:ans of step 3 - ans of step 2
  step 5: hour given * ans of step1+ans of step 4*minute given=desire ans
  answer:
  step 1: 360/(36/2)=20 degree
  step 2: 20/90=2/9
  step 3: 360/90=4 degree
  step 4: (4-2/9)=34/9
  step 5: (12*20)+(34/9)*40=88.88=89(approx)
  
• 13 years agoHelpfull: Yes(9) No(5)
• total angle made by hr hand=240+(4/9)*20 =nearly 240+9=249
  n total angle made by min hand= 40*(360/90)=160
  hence ans=249-160=89
• 13 years agoHelpfull: Yes(4) No(2)
• We see that
  Angle covered by hour hand in 1 hour = 360/18 = 20 degree
  In one min 20/90 = 2/9 degree
  Angle covered by minute hand in one min = 360/90 = 4 degree
  now, 12-8=4 ,(8 is bcoz at 40th min the clock stikes at 8)
  hence [4*20 + 40*2/9] = 88.88 = 89
• 13 years agoHelpfull: Yes(4) No(0)
• ans is 89 becoz 1ngle btween 12.40 is 89
• 13 years agoHelpfull: Yes(1) No(11)
• 18 hours..... so ans is 89
• 13 years agoHelpfull: Yes(1) No(0)