Question
Three bottles, Y, Z and A, contain a total of 16.2 ℓ of water. Bottle Y contains 3.4 ℓ of water more than Bottle Z. Bottle Z contains 5.5 ℓ of water more than Bottle A. What is the volume of water in Bottle Z?
3 m

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Three bottles, Y, Z and A, contain a total of 16.2 ℓ of water. Bottle Y contains 3.4 ℓ of water more than Bottle Z. Bottle Z contains 5.5 ℓ of water more than Bottle A. What is the volume of water in Bottle Z?