Aptitude - Clock - Discussion
Discussion Forum : Clock - General Questions (Q.No. 6)
6.
At what time between 7 and 8 o'clock will the hands of a clock be in the same straight line but, not together?
Answer: Option
Explanation:
When the hands of the clock are in the same straight line but not together, they are 30 minute spaces apart.
At 7 o'clock, they are 25 min. spaces apart.
Minute hand will have to gain only 5 min. spaces.
55 min. spaces are gained in 60 min.
| 5 min. spaces are gained in |  |
60 | x 5 |  min |
= 5 | 5 | min. |
| 55 | 11 |
| Required time = 5 |
5 | min. past 7. |
| 11 |
Discussion:
69 comments Page 7 of 7.
Scientist said:
1 decade ago
Dear aparna how did you got 11/2 ?
Vivek jain said:
1 decade ago
How 55 min. spaces are gained in 60 min. ?
Please somebody tell me!
Please somebody tell me!
Harshad said:
1 decade ago
How do you know that at 7 the difference is 25min?
@ Nitesh: Assuming I don't have a watch to look at and count the minutes.
@ Nitesh: Assuming I don't have a watch to look at and count the minutes.
Fatima said:
1 decade ago
Please someone clear that what angle in 8o'clock9 between.
Karthik said:
1 decade ago
In 1 hour the min hand will gain 60 min and the hour hand will gain 5 min (i.e if the time is 5 the hour hand will take 5 min spaces to reach 6) so 60-5= 55
Did you understand this?
Did you understand this?
Aparna said:
1 decade ago
Simple method:
In one hour,once minute hand and hour hand comes in straight line
so our answer is something 7 past,not 8 past
use formula,
titha(0)=30h-11/2m
titha is 180,hour hand is on 7
put values
we get titha=60/11
convert into quotitent*remainder/divisor format
we get
5*5/11
So answer is 5*5/11 past 7.
In one hour,once minute hand and hour hand comes in straight line
so our answer is something 7 past,not 8 past
use formula,
titha(0)=30h-11/2m
titha is 180,hour hand is on 7
put values
we get titha=60/11
convert into quotitent*remainder/divisor format
we get
5*5/11
So answer is 5*5/11 past 7.
Gopal said:
1 decade ago
I think they are counting clock wise direction from hour hand to minute hand. If they count from minute hand to hour hand it will be 35 mins
Nitesh Nandwana said:
1 decade ago
@Nithya.
This is very simple just see clock at the time of 7 o'clock.
The difference between hour hand and minute is 25 min.
This is very simple just see clock at the time of 7 o'clock.
The difference between hour hand and minute is 25 min.
Nithya said:
1 decade ago
How is that at 7 o'clock they are 25 min space apart ?
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