# Aptitude - Clock - Discussion

Discussion Forum : Clock - General Questions (Q.No. 8)

8.

The angle between the minute hand and the hour hand of a clock when the time is 4.20, is:

Answer: Option

Explanation:

Angle traced by hour hand in | 13 | hrs = | 360 | x | 13 | ° | = 130°. | ||

3 | 12 | 3 |

Angle traced by min. hand in 20 min. = | 360 | x 20 | ° | = 120°. | ||

60 |

Required angle = (130 - 120)° = 10°.

Discussion:

79 comments Page 1 of 8.
Snow said:
1 month ago

For 1 minute = 0.25 degree.

For 60 minutes = 15 degrees.

Then, for 20 minutes = 20 * 0.25 = 5 degrees.

Then, 15 - 5 = 10 degrees.

For 60 minutes = 15 degrees.

Then, for 20 minutes = 20 * 0.25 = 5 degrees.

Then, 15 - 5 = 10 degrees.

Janhavi Neelesh Vaishampayan said:
5 months ago

The hands initially make an angle of 0 degrees.

But as the hour hand rotates 0.5 degrees per minute,

it will have made an additional 20*0.5 degrees = 10.0 degrees.

i.e. the total angle between the hands = 0+10 = 10 degrees.

But as the hour hand rotates 0.5 degrees per minute,

it will have made an additional 20*0.5 degrees = 10.0 degrees.

i.e. the total angle between the hands = 0+10 = 10 degrees.

(3)

Deepti said:
1 year ago

Formula ( 30×Hrs - 11/2min),

= 30 × 4 - 11/2 × 20.

= 120 - 110.

= 10°.

= 30 × 4 - 11/2 × 20.

= 120 - 110.

= 10°.

(12)

Aaditya Pant said:
2 years ago

None of this is required. I use a basic formula, which is the absolute value of 30H- 5.5m.

Therefore, Angle = (30x4) - (5.5x20).

= 120-110.

= 10 °.

Therefore, Angle = (30x4) - (5.5x20).

= 120-110.

= 10 °.

(9)

Anil said:
3 years ago

For 1 min the Hr hand moves 0.5,

So, the angle between Hr and Min hand is =0,

Since Min Hand moves 20 mins. We have 20*0.5=10.

Therefore 0 + 10 = 10.

So, the angle between Hr and Min hand is =0,

Since Min Hand moves 20 mins. We have 20*0.5=10.

Therefore 0 + 10 = 10.

(5)

Omkar said:
3 years ago

Short trick for these ans.

Take a ratio of 4.20=1:5 then there is a formula, when ur ratio is 1:5 then, divide minutes by 2

i.e 20Ã·2 = 10.

Also when ratio is 1:8 then (minute-hours) * 2

Also for the ratio 1:3, = minute * 4+minute Ã·2

Ratio 1:10, θ = minute*2.5.

1:4then θ= minute*2.

1:6 θ = minute Ã·2.

Take a ratio of 4.20=1:5 then there is a formula, when ur ratio is 1:5 then, divide minutes by 2

i.e 20Ã·2 = 10.

Also when ratio is 1:8 then (minute-hours) * 2

Also for the ratio 1:3, = minute * 4+minute Ã·2

Ratio 1:10, θ = minute*2.5.

1:4then θ= minute*2.

1:6 θ = minute Ã·2.

(1)

Hashir Usmani said:
4 years ago

Can we do like this;

(20/60)*30 = 10?

(20/60)*30 = 10?

Durga prasad ullingi said:
4 years ago

4hours :20minuts angle = 20/2. = 10°.

Omkar said:
4 years ago

Just use this formula.

A = 30 * H - 5.5 * M.

Where;

A = angle.

H = hour.

M = minutes.

A = 30 * H - 5.5 * M.

Where;

A = angle.

H = hour.

M = minutes.

(7)

Aditi pawar said:
4 years ago

12 hour covers 360 degrees.

Then 360/12 = 30 degrees.

That is one hour.

Then 360/12 = 30 degrees.

That is one hour.

Post your comments here:

Quick links

Quantitative Aptitude

Verbal (English)

Reasoning

Programming

Interview

Placement Papers