Paphos People

You have 2 large empty containers. One has a capacity of 5 gallons and one has a capacity of 3 gallons. You also have a supply of running water. How do you end up with one container holding 4 gallons of water, using only the two containers you have?

When you have solved this, question 2 is "What film did this appear in?"

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Tina
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Fill the 3g container & then pour it into the 5g container, then fill the 3g container a 3rd & add to 5g container, which will give you 4g in the 5g container

Can't rememebr the film tho

How do you know exactly what a third is then Pete - it would only be a guess. Try again. It has to be exact.

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Tina
xxxx

Fill the 3g container & then pour it into the 5g container, refill the 3g container & then fill the 5g container until full, which will leave you with just 1g in the 3g container remaining, mark the container, then empty both containers
Fill up the 3g again & pour into the 5g container, then fill up the 3g container to the 1g mark & pour that into the 5g container, now you have 4g exactly

Still don't know the film

I'm not being big headed or anything but I know this is correct as its part of the promotion board test for the military along with loads of other kind of conundrums

No Pete - no marker!!!!! Maybe the military would supply you with one.

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Tina
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Not a marker as in a pen, you don't get them in the military either, use a stone or something to mark the container

No - you can only use the containers, (and of course the water) - nothing else at all. The measurement has to be exact.

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Tina
xxxx

Fill the 3 gallon jug. Pour it into the 5 gallon jug. Now the 5 gallon jug has 3 gallons of water, 2 gallons available.

Fill the 3 gallon jug. Pour the water from the 3 gallon into the 5 gallon until it's full. You now have a full 5 gallon jug and a 3 gallon jug with 1 gallon.

Empty the 5 gallon jug. Pour the 1 gallon from the 3 gallon jug into the 5 gallon jug.

Fill up the 3 gallon jug, pour it into the 5 gallon jug. You now have 4 gallons

The film you are talking about is DIE HARD 3 with Bruce Willis & Samual L Jackson who had to de-activate a bomb by the fountain

Or you can do it this way too:

Fill the 5 gallon jug from the tap, then fill the 3 gallon jug with the water from the 5 gallon jug. This'll leave you with exactly 2 gallons in the 5 gallon jug.

Pour away the water in the 3 gallon jug and empty the 5 gallon jug into the 3 gallon jug. This'll leave you with exactly 2 gallons in the 3 gallon jug.

Fill the 5 gallon jug from the tap, then top up the 3 gallon jug from the 5 gallon jug. This'll leave you with a full 3 gallon jug and a 5 gallon jug with exactly 4 gallons in it

I knew you would get there!!! Now I will have to think up a more difficult one!!!

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Tina
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I love these sort of things gets my brain working

... what a waste of good water