Question
Three bottles, Q, R and S, contain a total of 15.8 ℓ of water. Bottle Q contains 2.5 ℓ of water more than Bottle R. Bottle R contains 5.3 ℓ of water more than Bottle S. What is the volume of water in Bottle R?
3 m

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Three bottles, Q, R and S, contain a total of 15.8 ℓ of water. Bottle Q contains 2.5 ℓ of water more than Bottle R. Bottle R contains 5.3 ℓ of water more than Bottle S. What is the volume of water in Bottle R?