Level 1
John planned to store drinking water in 1.25 litre plastic bottles. If he was able to fill 7 plastic bottles fully with water, how many litres of water did John store?
Level 2
Three bottles, S, T and U, contain a total of 13.5 ℓ of water. Bottle S contains 1.3 ℓ of water more than Bottle T. Bottle T contains 4.3 ℓ of water more than Bottle U. What is the volume of water in Bottle T?