Aptitude - Clock - Discussion

Why we multiple it by 31/6?

@ALL.

I AM NEW TO THIS COMMUNITY,
NOW I WANT TO SHARE ABOUT CLOCK,
BEFORE GOING TO ATTEMPT ANY CLOCK PROBLEMS,
1.HOUR'S HAND TAKES.
=============HOURS HAND/ SHORT HAND=============
Time to finish one cycle = 360's.
i.e in 12hrs of time =360 degrees.
Within 1 hour of time = 360/12 =30 degrees.
Which means 60 mins = 30 degrees.
In one minute = 1/2 degree (half degree).
=============MINUTES HAND/ LONG HAND=============
Within 1 hour of time =360 degrees.
Which means 60 mins = 360 degrees.
In one minute = 360/60 = 6 degrees.

I think this stuff will help to solve any clock problem.

It is too much simple.do not complicate it.

Just convert hours into minutes..so, we can say.

12 hours = 360°.

Convert 12 hours into minutes= 720 minutes,
and 5 hours and 10 minutes= 310 minutes,


So simple formula fir that is;
720 minutes = 360°
310 minues = (?).

So,
Cross multiply it and then divide.

(310 * 360)/720.
It become 111,600/720= 155°.

Best explanation, thanks @Shreya Raut.

How 31/6 will come? Please explain me.

How 31/6?

Still can't understand.

Thanks for your explanation @Shreya Raut.

1 hr = 30° and 1 min = (1/2)°,

So , 5 hrs = 150 min and 10 min = 5°,

Thus 150 + 5 = 155°.

12pm to 5pm = 5hrs.
1hr = 30°.

Therefore, 5 * 30 = 150°.
Tilting time = 10min.
1 min = 1/2°.

Therefore, 10/2 = 5°.

Ans = 150° + 5° = 155°.

5 min past 10.

Number of hours = 5.

Degrees rotated in 1 hour or 60= 30deg.
Degrees rotated in 5 hours = 150deg.
Degree rotated in 10 min = (30/6) =5.
Degrees rotated in 10 min past 5 = 155deg.