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Wine Keg
Thanks Bacchus

wine keg

Kristina had a 10 litre wine keg and a jug.
She removed a jugful of wine and filled up the keg with water.
Once the wine and water had thoroughly mixed, she drew off another jugful.
She again filled up the keg with water.
The wine keg now contained equal quantities of wine and water.

Question:  What was the capacity of the jug?

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