Question 687068
Solve the problem using matrices.

A chemist has prepared two acid solutions, one of which is 6% acid by volume, another 10% acid. How many cubic centimeters of each should the chemist mix together to obtain 50 cm3 of a solution that is  acid.
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Any mix of the 2 will be acid, between 6% and 10%.
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The 2nd choice is 100 cc, tho, not 50.