# Aptitude - Clock - Discussion

Discussion Forum : Clock - General Questions (Q.No. 14)

14.

At what time between 4 and 5 o'clock will the hands of a watch point in opposite directions?

Answer: Option

Explanation:

At 4 o'clock, the hands of the watch are 20 min. spaces apart.

To be in opposite directions, they must be 30 min. spaces apart.

Minute hand will have to gain 50 min. spaces.

55 min. spaces are gained in 60 min.

50 min. spaces are gained in | 60 | x 50 | min. or 54 | 6 | min. | |

55 | 11 |

Required time = 54 | 6 | min. past 4. |

11 |

Discussion:

53 comments Page 1 of 6.
Aravind said:
1 decade ago

If any tell me how is it come 30 min space apart...

Siri said:
1 decade ago

I am not clear above answer any one tell me.

Srikanth said:
1 decade ago

Here 30 min space apart means for opposite directions of minute hand and hour hand 30 min space apart.

Shree Hema said:
1 decade ago

Here we can use the formula:

theta=11(m)/2-30(h)

opposite direction means 180 degree; hour=4

180=11(m)/2-30(4)

m=54 6/11

theta=11(m)/2-30(h)

opposite direction means 180 degree; hour=4

180=11(m)/2-30(4)

m=54 6/11

Shivakarthik said:
1 decade ago

Its simple only so i think formula s no need for this ... if both the hands r in opposite direction or in the same straight line in 30 mins spaces ... v have 2 find out the time b\w 4 to 5 . at the time of 4 the spaces b\w the both hand s 20 min so 20=30=50 ...

60/55*50 =54*6/11min past4. hope u will understand?

60/55*50 =54*6/11min past4. hope u will understand?

Shivakarthik said:
1 decade ago

Its simple only so i think formula s no need for this ... if both the hands r in opposite direction or in the same straight line in 30 mins spaces ... v have 2 find out the time b\w 4 to 5 . at the time of 4 the spaces b\w the both hand s 20 min so 20+30=50 ...

60/55*50 =54*6/11min past4. hope u will understand?

60/55*50 =54*6/11min past4. hope u will understand?

Neeraj said:
1 decade ago

Why 50 min why not 10 min to be 30 spaces apart ?

Xyz said:
1 decade ago

@Neeraj

Because the minutes hand can move only in clock-wise direction. So 20 min to reach at the same place as the hour hand + 30 min reach in the opposite direction.

Because the minutes hand can move only in clock-wise direction. So 20 min to reach at the same place as the hour hand + 30 min reach in the opposite direction.

Xyz said:
1 decade ago

Can somebody tell me why it will gain only 55 min spaces in 60 min?

Abc said:
1 decade ago

Same query as xyz have. Please answer it if any one knows.

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