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:
55 comments Page 6 of 6.
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?
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
Srikanth said:
1 decade ago
Here 30 min space apart means for opposite directions of minute hand and hour hand 30 min space apart.
Siri said:
1 decade ago
I am not clear above answer any one tell me.
Aravind said:
1 decade ago
If any tell me how is it come 30 min space apart...
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