Today's Puzzle

Now an easy one. As the Seven Forums is a global, non-political and non-discriminating community I have decided to publish separate puzzles for for metric and imperial systems in order not to insult anyone's feelings. The order was decided by tossing coin so the fact that the metric puzzle is told before imperial one does not represent any ideologies but is a pure coincidence.

Metric:
You need to measure exactly 8 liters of water to a bigger 9 liter container. How to do it when you only have a 5 liter and a 7 liter bowl at your disposal?

Imperial:
You need to measure exactly 8 gallons of water to a bigger 9 gallon container. How to do it when you only have a 5 gallon and a 7 gallon bowl at your disposal?

fill the 20 gallon up to the top then ,take out 5 then 7 gallons leaving 8.

boohbah said:

fill the 20 gallon up to the top then ,take out 5 then 7 gallons leaving 8.

S***. Correct answer but too easy .

I have edited the original puzzle to make it a bit more difficult.

no it was incredibly difficult,

no! cos we're on a water meter

No, you can't use the 9 liter / gallon container. You need to find a way to measure 8 liters / gallons only by using the 5 and 7 bowls.

1. fill 7 liter ( or gallon)
2. pour remaining contents of 7 liter (or gallon) into 9 liter (or gallon)
3. empty 5 liter (or gallon)
4. repeat #1 #2, and #3 three times

See it again. I was editing while you were reading and posting.

me too