There were 2 4/5 quarts of milk in container A and some milk in Container B. Lisa poured 1 2/5 quarts of milk each into Container A and Container B. In the end, the total volume of the milk in the two

There were 2 4/5 quarts of milk in container A and some milk in Container B. Lisa poured 1 2/5 quarts of milk each into Container A and Container B. In the end, the total volume of the milk in the two containers was 10 quarts. How many quarts of milk were in Container B at first? Give your answer as a decimal.