Latest TCS Aptitude Question SOLUTION: There is a planet Oz in which there is 36 hrs in a day & 90 minutes in a hrs and 60 seconds in 1 minute it is having same pattern as our watch. Then what will be angle between hour

• Placement Papers
• /
• TCS

TCS Question Papers: TCS Interview Experience(90) TCS Company Profile

(#M40002715) TCS question Keep an EYE

There is a planet Oz in which there is 36 hrs in a day & 90 minutes in a hrs and 60 seconds in 1 minute it is having same pattern as our watch. Then what will be angle between hour hand and minute hand at 9:40?
a) 29
b) 12
c) 67
d) 98

Asked In TCS preethi poosa (12 years ago)

Solved Debabrata Bej Read Solution (2)

Is this Puzzle helpful?   (13)   (3) Submit Your Solution

Read Solution (2) :

Debabrata Bej  (12 years ago)

36 hours a day means the clk will be of 18 hours.
18 hours covers 360 deg
Thus, 1 hour covers 20 deg
9 hours covers 9*20=180 deg
now,1 hour in 90 min
thus, in 90min the hour hand goes 20deg
so, for 1min hr hand goes 2/9deg
for 40 min hour hand goes (2/9)*40deg=80/9deg=9deg(approx)
thus hour hand covers total of 180+9=189deg
now min hand covers=40*4=160deg
(because, 90min=360deg
1min=4deg)
so angle between hour hand & min hand is 189-160=29deg
ans:29

Is this solution Helpfull? Yes (42) | No (2)  

Sanjana Patnaik  (12 years ago)

Time is 9:40 means 85/9hours(since one hour is 90 minutes)
Angle traced by hour hand is (85/9)*(360/18)(since 18 hours cover 360 degrees)=188.88degrees
Angle traced by minute hand =40*360/90=160degrees
So angle between hour hand and minute hand=188*88-160=28.88degrees or say 29 degrees

Is this solution Helpfull? Yes (2) | No (1)  

Please Login to Read Solution.