Question
At first, a pot contained 25 ℓ of water. Dana added another 12 ℓ of water into the pot. Then she used 79 of all the water in the pot. How much water did Dana use? Express your answer as a fraction in its simplest form.
4 m

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At first, a pot contained 25 ℓ of water. Dana added another 12 ℓ of water into the pot. Then she used 79 of all the water in the pot. How much water did Dana use? Express your answer as a fraction in its simplest form.