(Hopefully this one hasn't been posted
it's a really old one I think
don't post a solution if you ALREADY know the answer
I haven't posted the solution cause I want people to actually try and not just look at the question then giveup right away.
An old man has a boat and needs to cross the river, the problem is he has three things he needs to get across the river
a chicken, a dog, and a sack of grain.
He has three problems:
His boat can only support himself and one item,
The dog can't be left with the chicken, and
The chicken can't be left with the grain.
How does he get across with all three items intact?
First the old man takes the chicken across the river. After leaving it he comes back and takes the dog across the river. After keeping the dog on that side he takes the chicken and crosses to the other side. Then he takes the sack of grain and leaves the chicken. After taking the sack he comes back for the chicken. This way he would get all three things across. Maybe he would have been better of roasting the chicken!