84. Transporting Water With Limited Capacity
In a skill test a teacher gave an open pot, which can contain only 3 litres of water, to a student and told to bring 5 litres of water from market. How will the student bring 5 litres of water in a pot whose capacity is only 3 litres?
Added 6 January 2010
Solution:
He makes two trips: first he fills the 3-litre pot to the brim and brings those 3 L to the teacher; then he returns, fills the pot two-thirds full (2 L), and brings that. The two deliveries add up to the required 5 litres.
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