Question

you have been given two cans with capacities 9 and 5 liters respectively. There is no graduation marks on the cans nor is eye estimation possible. How can you collect 3 litres of water from a tap? ( you are allowed to pour out water from the can). If the cans had capacities 8 and 6 litres respectively, could you collect 5 liters? ​

Answer 1

3 liters of water from a tap can be collected.

5 liters of water from a tap cannot be collected.

Given:

• 1st case.
• Cans with capacities 9 and 5 liters respectively.
• 2nd case.
• Cans had capacities 8 and 6 liters respectively,

To find:

• 1st case.
• How can you collect 3 liters of water from a tap?
• 2nd case.
• Could you collect 5 liters.

Explanation:

• For 1st case,
• Take 9 liters water remove 5 liters from it remaining is 4 liters.
• Add another 9 liters water remove 5 liters from it remaining is 8 liters.
• Finally remove 5 liters of water from 8 liters we can obtain 3 liters of water.
• For 2nd case,
• It is not possible to obtain 5 liters of water because Both can had even liters capacity.

Even + Even = Even

Even - Even = Even

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