There are three jackals on one side of a river and three coyotes on the other si

Question

There are three jackals on one side of a river and three coyotes on the other side. They have a boat capable of carrying at most two animals. At no point can the number of jackels outnumber the number of coyotes on one side of the river or in the boat. Each group wishes to change sides of the river. Figure out which side of the river the boat must be on to start the problem and how to manage to get each animal safely to its destination.

Note: At no point can the number of jackals outnumber the number of coyotes on one side of the river or in the boat.

Using post-it notes as the jackals and coyotes helps.

*Please show picture and explain in writing.

Explanation / Answer

Here we start from Jackal side and boat take two jackals towards the side where Coyotes are there. Once reaches that side, it drops down both jackals on Coyotes side. Then it takes one Coyote in the boat and continues towards Jackals side ( In this way, there is one Jackal remains on one side and two Coyote and two Jackals on other side of the river).

Now once boat reaches to Jackal`s side, it drops down the Coyote that side, takes last jackal towards river side where two jackals and two coyotes are already there. Now it drops down that jackals with other two jackals and take both remaining coyote and drop them on towards the side where one coyote was left in the first round.

In this way now there are three Coyotes on one side and three jackals on other side of the river, without violating the said rule.

Answer

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