3
A milkman uses three containers for selling milk, their capacities being 40L, 30 L and 20L respectively. He fills respectively 87.5%, 80% and 90% of the container with a mix of milk and water in theratios, 3 : 2, 5 : 1 and 7 : 2 respectively. What is the ratio of the total quantity of milk to that of water carried by him?