how can you get exactly 4 gallons of water using only a 5 gallon jug and a 3 gallon jug to measure?

Answer 1

Fill the 3 and pour it into the 5. Fill the 3 again and fill the 5 from it. This leaves 1 gallon in the 3. Dump the 5 out and pour the remaining 1 gallon from the 3 into it. Then fill the 3 again and pour it all into the 5. Voila, 4 gallons.

Answer 2

3 gallon jug and a 5 gallon jug

1.) Take the 5 gallon jug and fill it up.
2.) Pour the 5 gallon jug into the 3 gallon jug, so now you have 2 gallons left in the 5 gallon jug.
3.) Empty out the 3 gallon jug, now pour the 2 gallons in the 5 gallon jug into the 3 gallon jug, now the 5 gallon jug is emtpy and you have only 2 gallons of water in the 3 gallons with just 1 gallon of space left.
4.) Fill the 5 gallon jug up.
5.) Pour the water from the 5 gallon jug into the 3 gallon jug until its full. All you are doing is adding 1 more gallon to the 3 gallon jug, and 5 - 1 = 4

i hope you got all that.

Answer 3

1. Fill the 5 gallon jug full, then transfer the water into the 3 gallon jug. Leaving two gallons in the 5 gallon jug.
2. Pour out the 3 gallons in the 3 gallon jug.
3. Pour the 2 gallons from the 5 gallon jug into the 3 gallon jug.
4. Fill the 5 gallon jug with water.
5. Top off the 3 gallon jug with water from the 5 gallon jug (which moves 1 gallon to the 3 gallon jug).
Now there is exactly 4 gallons in the 5 gallon jug.

Answer 4

Assuming you have a place to put the water, fill the 5 gallon jug. Pour it into the 3 gallon jug. You'll have 2 gallons left. Do that again, and you'll have 4. (But, you would need a place to put the 2 + 2 gallons.)
If you can only use these two jugs--fill the 3 gallon jug twice and pour it into the 5 gallon jug. This leaves one gallon in the 3 gallon jug. Dump out the 5, pour in that one gallon, and refill the 3 gallon. You've now got 4 gallons.

Answer 5

Fill the 5-gallon jug, pour water into 3-gallon jug. You have 2 gallons in a 5-g jug. now empty the 3-g jug. pour your 2 gallons in there.
fill the 5 -gallon jug again. you have 5 gallons in here, right? now pour water from the full 5-g jug into the 3-gallon jug which already has 2 gallons. Apparently, all you can pour into the 3-gallon jug is just 1 gallon. so, you are left with 4 gallons in the 5-gallon jug.

Answer 6

Fill up the 5 gallon jug with water, pour it into 3 gallon jug, leaving 2 gallons in the 5 gallon jug.
Then empty the 3 gallon jug and pour the 2 gallons into there. Fill up the now empty 5 gallon jug and pour it into the 3 gallon jug until it is full. You have just poured out exactly 1 gallon from the 5 gallon jug, thus leaving you with 4 gallons.

Answer 7

Fill the 5 gallon and pour in the second jug ( 5-3 = leave two gallons in the 5 gallon jug)

Empty the three jug and pour in the remaining two gallons (The five gallon jug is empty and the three gallon jug has two gallons in it)

Now fill the five gallon jug again and pour one gallon into the 3 gallon jug. (That leaves you with 4 gallons in the 5 gallon jug and the 3 gallon jug full).

Another way of putting it is this:

Ten gallons of 10 water (easier if you think of two jugs)
Fill up the 3 gallon jug (you have 7 gallons left)
Empty 3 gallon jug and fill again ( that leave you with 4 gallons inside of the 5 gallon jug)

Answer 8

Fill the 5, then pour it into the 3. Dump out the 3. You now have two gallons in the 5.

Pour those two gallons into the 3. Refill the 5. Fill the 3 from the 5 (this will move one gallon, since the three already has two gallons in it).

The 5 now has four gallons in it.

Answer 9

Basically you are asking how to get the number 4 by only adding or subtracting 5 or 3. So this would work:

add 5 gallons
add 5 gallons
subtract 3 gallons
subtract 3 gallons

voila...4 gallons because

5+5-3-3 = 4

Answer 10

Fill the 5 gallon bucket and pour it into the 3 gallon bucket-- 2 gallons left in the 5 gallon bucket. Empty the 3 gallon bucket and pour in the remaining 2 gallons. Fill the 5 gallon bucket, and then pour off 1 gallon by topping off the 3 gallon pail. Waste of water, don't you think?