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Solution: How many of each strength must he use to produce mixture of 60 cubic meters?

How many of each strength must he use to produce mixture of 60 cubic meters?

Problem Statement: ME Board October 1992

A Chemist of a distillery experimented on two alcohol solutions of different strength, 35% alcohol and 50% alcohol, respectively. How many cubic meters of each strength must he use in order to produce mixture of 60 cubic meters that contain 40% alcohol?

Problem Answer:

40 cu. m of solution with 35% alcohol, 20 cu. m of solution with 50% alcohol

Solution:

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