Question
Three pitchers, M, N and P, contain a total of 18.2 ℓ of water. Pitcher M contains 2.5 ℓ of water more than Pitcher N. Pitcher N contains 4.4 ℓ of water more than Pitcher P. What is the volume of water in Pitcher N?
3 m

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Three pitchers, M, N and P, contain a total of 18.2 ℓ of water. Pitcher M contains 2.5 ℓ of water more than Pitcher N. Pitcher N contains 4.4 ℓ of water more than Pitcher P. What is the volume of water in Pitcher N?