You have an empty 3-liter container, a full 5-liter container with 50 degrees water, and a full 6-liter container with 90 degrees water.

Can you manage to get some 72 degrees water?

(In reply to solution by Steve Royer)

Only Pedro's/Nikki's solution is correct. In Steve's solution in step 3 the tepmerature of water will come out to be 78 and not 74.

So after the 2nd step the solution should be like this

fill 5 liter with 90 deg water from 3 liter, is now 78 deg

fill empty 3 liter with 70 deg water from 6 liter, is now 70 deg

fill 6 litre with 78 deg water from 5 liter, is now 74 deg
(then throw the water in the 5 litre vessel)

fill 5 litre with 70d deg water from 3 litre, is now 70 deg

fill 3 litre with  deg water from 6 litre, both r now 74 deg

fill 6 liter with 70 deg water from 5 litre (having just 3 litres in it), is now 72 deg in 6 litre

fill 5 liter with 90 deg water from 3 liter, is now 74 deg

Posted by Vivek on 2005-03-07 05:47:25