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?

(notation L : liters, C: degree, cont container )

begin configuration:

5L 50C, 6L 90C, 3L

                                            5L cont, 6L cont, 3L cont
                                             --------------------------
pour from 5L 50C in 3L         : 2L 50C, 6L 90C, 3L 50C
pour from 6L 90C in 2L 50C  : 5L 74C, 3L 90C, 3L 50C
pour from 3L 50C in 3L 90C  : 5L 74C, 6L 70C, 0L
pour from 6L 70C in 3L         : 5L 74C, 3L 70C, 3L 70C
pour from 5L 74C in 3L 70C  : 2L 74C, 6L 72C, 3L 70C 

 

Posted by pedro on 2004-10-11 11:15:04