Puzzle of this week
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Puzzle of this week
Four friends A, B, C, D
Need to cross a bridge..
A maximum of 2 peoples can cross at a time..
It was dark out there and they just have 1 lamp.
People that cross the bridge must carry the lamp to see the way..
A pair must walk together at the speed of slower person...
Speeds of A , B , C , D
A: 1 minute to cross bridge
B: 2 minutes to cross bridge
C: 7 minutes to cross bridge
D: 10 minutes to cross bridge
Now question is... "what is the total minimum time required by all 4 friends to cross the bridge....?
Need to cross a bridge..
A maximum of 2 peoples can cross at a time..
It was dark out there and they just have 1 lamp.
People that cross the bridge must carry the lamp to see the way..
A pair must walk together at the speed of slower person...
Speeds of A , B , C , D
A: 1 minute to cross bridge
B: 2 minutes to cross bridge
C: 7 minutes to cross bridge
D: 10 minutes to cross bridge
Now question is... "what is the total minimum time required by all 4 friends to cross the bridge....?
zprogrammer
- Anuj Dhawan
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Re: Puzzle of this week
17 Minutes?
Thanks,
Anuj
Disclaimer: My comments on this website are my own and do not represent the opinions or suggestions of any other person or business entity, in any way.
Anuj
Disclaimer: My comments on this website are my own and do not represent the opinions or suggestions of any other person or business entity, in any way.
- Robert Sample
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Re: Puzzle of this week
Code: Select all
A and B cross A returns ( 2 + 1 ) 3
C and D cross B returns ( 10 + 2 ) 12
A and B cross 2
total 17
cheers
enrico
When I tell somebody to RTFM or STFW I usually have the page open in another tab/window of my browser,
so that I am sure that the information requested can be reached with a very small effort
enrico
When I tell somebody to RTFM or STFW I usually have the page open in another tab/window of my browser,
so that I am sure that the information requested can be reached with a very small effort
- Anuj Dhawan
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Re: Puzzle of this week
Code: Select all
A and B go across : 2 minutes
B returns with flash : 2 minutes
C and D go across : 10 minutes
A returns with flash : 1 minute
A and B go across : 2 minutes
----------
17 minutes
Thanks,
Anuj
Disclaimer: My comments on this website are my own and do not represent the opinions or suggestions of any other person or business entity, in any way.
Anuj
Disclaimer: My comments on this website are my own and do not represent the opinions or suggestions of any other person or business entity, in any way.
- Anuj Dhawan
- Founder
- Posts: 2802
- Joined: Sun Apr 21, 2013 7:40 pm
- Location: Mumbai, India
- Contact:
Re: Puzzle of this week
oops, Robert! - valentine's day effect!
Thanks,
Anuj
Disclaimer: My comments on this website are my own and do not represent the opinions or suggestions of any other person or business entity, in any way.
Anuj
Disclaimer: My comments on this website are my own and do not represent the opinions or suggestions of any other person or business entity, in any way.
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Re: Puzzle of this week
Good one all :-)
Next week - I will come up with another puzzle and will also declare the correct answer for this puzzle
Next week - I will come up with another puzzle and will also declare the correct answer for this puzzle
zprogrammer
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- Joined: Wed Nov 20, 2013 11:53 am
- Location: Mars
Re: Puzzle of this week
The correct answer is 17 Minutes also watch out for Puzzle of this week ...
zprogrammer
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