Mathematics, 15.04.2021 01:40, 224509

A chemist needs a 60% acid solution. How many liters of a 10% acid solution and an 80% acid solution must be mixed together to obtain 126 L of the 60% acid solution? Enter only the number of liters of the 10% solution that is needed.

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A chemist needs a 60% acid solution. How many liters of a 10% acid solution and an 80% acid solution...