PUZZLE V
"Crossing the Calledin"
Two men and two women
stand on the banks of the river Calledin.
They would like to get on the other side with a boat. Unfortunately, the boat can only
carry as much as two people.
The 4 people can not cross the river at the same speed. One women is able to cross it in 5
minutes and the other in 10. The men can cross it in 20 and 25 minutes. (This means that
if a men is in the boat, the minimum cross time - one way - will be 20 minutes.)
How can they cross the river in one hour ? -[answer]- |
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