In this puzzle we have to make sure that no person is in danger.
Let the names of the persons be A, B and C.
So they start from their starting point and after 1st day A give it's 2 days resource to B and C. So A has 1 day resource left with him which he can use to return back to the starting point. Now B and C starts again and they have a 4 day supply again because of the food and water given by A.
After the second day B gives his 1 day supply to C and keeps the remaining 2 days supply with him so that he can return safely to the starting point.
Now after 2nd day C again has 4 days supply so he can continue towards the destination point and will reach there safely.
So only 1 person can reach the destination safely.
Images:
A - 4 days A - 3 days
B - 4 days ----------------------------------------------------------------------------------- B - 3 days
C - 4 days after 1st day C - 3days
A gave its 2 days supply to B and C. So now
A - 1 day
B - 4 days ---------------------------------------------------------------------------------- B - 3 days
C - 4 days after 2nd day C - 3days
B gave it's 1 day supply to C and B returns back.
B - 2 days
C - 4 days
So C has 4 days resources and can cover the 4 remaining days.
Let the names of the persons be A, B and C.
So they start from their starting point and after 1st day A give it's 2 days resource to B and C. So A has 1 day resource left with him which he can use to return back to the starting point. Now B and C starts again and they have a 4 day supply again because of the food and water given by A.
After the second day B gives his 1 day supply to C and keeps the remaining 2 days supply with him so that he can return safely to the starting point.
Now after 2nd day C again has 4 days supply so he can continue towards the destination point and will reach there safely.
So only 1 person can reach the destination safely.
Images:
A - 4 days A - 3 days
B - 4 days ----------------------------------------------------------------------------------- B - 3 days
C - 4 days after 1st day C - 3days
A gave its 2 days supply to B and C. So now
A - 1 day
B - 4 days ---------------------------------------------------------------------------------- B - 3 days
C - 4 days after 2nd day C - 3days
B gave it's 1 day supply to C and B returns back.
B - 2 days
C - 4 days
So C has 4 days resources and can cover the 4 remaining days.
2 comments:
Consider the case :
Assume A gives all his resources to B and C equally. Each will have resources that can help them servive for 2 more extra days. So 2 members can actually reach to the destination.
With A not travelling at all.
Hi Ashwiin
See the Puzzle Carefully. It says each person can carry enough food and water only for 4 days. If A gives his resources to B and C they cannot carry at the start because maximum they can carry is limited to 4 days only. I hope this solves your doubt.
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