1. I had a 10-litre cask of pure alcohol. I removed a jugful of it and replaced it with a jugful of water. I then removed a jugful of this mixture and replaced it with another jugful of water leaving a 64% alcohol mixture. What was the capacity of the jug?

The jug held 2 litres

The jug held 1.5 litres

The jug held 1 litre