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This is a discussion on How many minutes was his clock faster? within the Brainteasers forums, part of the Brain Gym category; John left home at 8:00AM for the bus station. When he arrived at the bus station, the clock at the bus station showed 8:05AM. He immediately found out that he ...
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How many minutes was his clock faster?
John left home at 8:00AM for the bus station. When he arrived at the bus station, the clock at the bus station showed 8:05AM. He immediately found out that he forgot his math book and returned home. When he got back home, the clock at home showed 8:18AM.
Assume his walking speed is always the same. How many minutes was his clock faster?
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-- Brijesh Jain |
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Re: How many minutes was his clock faster?
4 minutes faster!!
__________________
[B][COLOR="Blue"]Anyone who thinks he knows all the answers, must not be up-to-date on the questions[/COLOR][/B] [B]Anshul[/B]:) |
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Re: How many minutes was his clock faster?
Yes, it's the right answer.But whenever you give answer of any brainteaser, please always give explation also.
__________________
-- Brijesh Jain |
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Re: How many minutes was his clock faster?
I give answer. If someone asks I always give the solution.
Let the John's clock be x minutes faster To reach from home to station John took 5+x minutes. To reach from station to home John took 18-5-x = 13-x minutes Both time should be equal since his speed is always same. 5+x = 13-x hence x = 4 minutes.
__________________
[B][COLOR="Blue"]Anyone who thinks he knows all the answers, must not be up-to-date on the questions[/COLOR][/B] [B]Anshul[/B]:) |
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Re: How many minutes was his clock faster?
One more simple solution is, When he got back home, the clock at home showed 8:18AM.John left home at 8:00AM.
total time is 18 min.One side time is 9min.bus station showed 8:05AM. so, john's watch is 4 min faster, in real he left the home at 7:56AM.
__________________
-- Brijesh Jain |
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Re: How many minutes was his clock faster?
Yes. good solution
__________________
[B][COLOR="Blue"]Anyone who thinks he knows all the answers, must not be up-to-date on the questions[/COLOR][/B] [B]Anshul[/B]:) |
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