Question
Three containers contain an average of 48 ℓ of washing liquid. The 1st container contains 53 ℓ of washing liquid and the 2nd container contains 12 ℓ more washing liquid than the 1st container. How much washing liquid does the 3rd container contain?
2 m

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Three containers contain an average of 48 ℓ of washing liquid. The 1st container contains 53 ℓ of washing liquid and the 2nd container contains 12 ℓ more washing liquid than the 1st container. How much washing liquid does the 3rd container contain?