Asked by First Name
                A chemist has a bottle of a 10% acid solution 
and a bottle of a 30% acid solution. He mixes the
solutions together to get 500 mL of a 25% acid
solution. How much of the 30% solution did
he use?
            
        and a bottle of a 30% acid solution. He mixes the
solutions together to get 500 mL of a 25% acid
solution. How much of the 30% solution did
he use?
Answers
                    Answered by
            Scott
            
    .3 x + [.1 (500 - x)] = .25 * 500
    
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