You have to measure exactly 4 liters of water, but you only have a 3-liter bottle and a 5-liter bottle. How do you do it?

Posted by lakhansin-22735 on 5/15/2014 | Category: Aptitute Test Interview questions | Views: 2838 | Points: 40

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Answer:

Fill the 3-liter bottle and pour it into the empty 5-liter bottle.
Fill the 3-liter bottle again, and pour enough to fill 5-liter bottle. This leaves exactly 1 liter in the 3-liter bottle.
Empty the 5-liter bottle; pour the remaining 1 liter from the 3-liter bottle into the 5-liter bottle.
Fill the 3-liter bottle and pour it into the 5-liter bottle. The 5-liter bottle now has exactly 4 liters.

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Comments or Responses

Posted by: Pabbathi on: 6/2/2014 | Points: 10

Fill the 5-liter bottle and pour it into the empty 3-liter bottle.
This leaves exactly 2 liters in the 5-liter bottle.
Empty the 3-liter bottle.
Pour remaining 2 liters from 5-liter bottle into the 3-liter bottle.
Fill the 5-liter bottle again and pour into the 3-liter bottle which already contains 2 liters and leaves 4 liters in 5-liter bottle.

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