SOLUTION: a Chemist has a 60% acid solution and a 20% acid solution. Write an equation to answer this question: How many milliliters of each should be used to make 140ml of a 35% acid soluti

Algebra ->  Coordinate Systems and Linear Equations  -> Lessons -> SOLUTION: a Chemist has a 60% acid solution and a 20% acid solution. Write an equation to answer this question: How many milliliters of each should be used to make 140ml of a 35% acid soluti      Log On


   

Question 1129777: a Chemist has a 60% acid solution and a 20% acid solution. Write an equation to answer this question: How many milliliters of each should be used to make 140ml of a 35% acid solution? Let x represent the number of ml of the 60% acid solution. Solve the equation and write the answer to the question.
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
60x%2B20%28140-x%29=35%2A140

You can solve this fairly simple equation.

highlight%28x=52.5%2AmL%29-------volume of the 60% acid solution