# Aptitude - Clock - Discussion

Discussion Forum : Clock - General Questions (Q.No. 3)

3.

A clock is started at noon. By 10 minutes past 5, the hour hand has turned through:

Answer: Option

Explanation:

Angle traced by hour hand in 12 hrs = 360°.

Angle traced by hour hand in 5 hrs 10 min. i.e., |
31 | hrs = | 360 | x | 31 | ° | = 155°. | ||

6 | 12 | 6 |

Discussion:

86 comments Page 1 of 9.
Aspire Study said:
2 years ago

Time: 5:10PM.

Standard time 12:00PM.

Angel traced by hours 12 hr =360°

1 hr = 360°/12 = 30°

60 minutes=30°

One minutes = 1/2°

12 PM to 5 PM there are 5 hr so 5*30°=150°

For 10 minutes 1/2*10 =5°

Total Degree= 155°

Standard time 12:00PM.

Angel traced by hours 12 hr =360°

1 hr = 360°/12 = 30°

60 minutes=30°

One minutes = 1/2°

12 PM to 5 PM there are 5 hr so 5*30°=150°

For 10 minutes 1/2*10 =5°

Total Degree= 155°

(159)

Vikram kumar said:
2 years ago

5 minute = 30°

1 hour=30°

So,

Angle traced by 5 h 10 min =31/6 * 30=155°.

1 hour=30°

So,

Angle traced by 5 h 10 min =31/6 * 30=155°.

(21)

Yashodeep said:
2 years ago

The clock starts at noon till 5:10.

Hour hand has travelled 5 hours,

Therefore 5*30=150.

In the Remaining 10 min hours, the hand must have travelled some more distance.

Therefore 10min= 10/60 (converting it into hours)=1/6,

Now 1/6*30 ( because hour hand makes 30° angle in every hour)=5°

Therefore add 150+5=155°.

Hour hand has travelled 5 hours,

Therefore 5*30=150.

In the Remaining 10 min hours, the hand must have travelled some more distance.

Therefore 10min= 10/60 (converting it into hours)=1/6,

Now 1/6*30 ( because hour hand makes 30° angle in every hour)=5°

Therefore add 150+5=155°.

(23)

Amar naik said:
2 years ago

5hrs10mit.

60mit =30°.

5°+5°+5°+5°+5°+5°/10mit.

5hrs*30° =150°.

10mit/5°.

150° +5°= 155°

60mit =30°.

5°+5°+5°+5°+5°+5°/10mit.

5hrs*30° =150°.

10mit/5°.

150° +5°= 155°

(5)

Shreya said:
2 years ago

in this same ques if we've asked to take out the angle made by min hand then what will it be?

(4)

T subhadra said:
3 years ago

I think the right answer is 95.

c = 3 * 30 + 5 = 90 + 5= 95.

c = 3 * 30 + 5 = 90 + 5= 95.

(18)

Ram Ghalley said:
3 years ago

5 :10

12hours =360°.

1 hour = 360/12

=30°.

5 hours= 5*30

=150°.

1 hour= 60mins

1 min =1/60 hour.

10 mins= 10*1/60.

= 1/6 hour.

= 30° * 1/6.

=5°.

Total angle moved by hour hand = 150° + 5°.

= 155°.

12hours =360°.

1 hour = 360/12

=30°.

5 hours= 5*30

=150°.

1 hour= 60mins

1 min =1/60 hour.

10 mins= 10*1/60.

= 1/6 hour.

= 30° * 1/6.

=5°.

Total angle moved by hour hand = 150° + 5°.

= 155°.

(11)

Anjana said:
3 years ago

12-5.10 = 5hr 10min

1hr=30 °.

5hr = 5 * 30=150

1min =1/2 °.

10min =10 * 1/2=5.

Ans) 150 + 5=155°.

1hr=30 °.

5hr = 5 * 30=150

1min =1/2 °.

10min =10 * 1/2=5.

Ans) 150 + 5=155°.

(7)

Morpankh said:
3 years ago

For hour hand(HH),we have a notation i.e., 360/12 and for min hand (MH) it's 360/60.

360/12=30° ---> 1.

Now,as given in the problem..

10 past 5 i.e, it's 5:00 and extra 10 min completed overall...

So, it's 5:00+00:10=5:10.

It's also written as..5+(10/60).

5+(1/6)..= 31/6---> 2eq.

Finally ,from 1eq & 2eq..

30° * 31/6 = 155°

360/12=30° ---> 1.

Now,as given in the problem..

10 past 5 i.e, it's 5:00 and extra 10 min completed overall...

So, it's 5:00+00:10=5:10.

It's also written as..5+(10/60).

5+(1/6)..= 31/6---> 2eq.

Finally ,from 1eq & 2eq..

30° * 31/6 = 155°

(4)

Morpankh said:
3 years ago

For hour hand (HH), we have a notation. Right?

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