Question
At first, a pail contained 15 ℓ of water. Marion added another 13 ℓ of water into the pail. Then she used 28 of all the water in the pail. How much water did Marion use? Express your answer as a fraction in its simplest form.
4 m

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At first, a pail contained 15 ℓ of water. Marion added another 13 ℓ of water into the pail. Then she used 28 of all the water in the pail. How much water did Marion use? Express your answer as a fraction in its simplest form.