SOLUTION: Please help. Ink Remover. Etch Clean Graphics uses one cleanser that is 25% acid and a second that is 50% acid. How many liters of each should be mixed to get 30L of a solution t

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: Please help. Ink Remover. Etch Clean Graphics uses one cleanser that is 25% acid and a second that is 50% acid. How many liters of each should be mixed to get 30L of a solution t      Log On


   

Question 744886: Please help. Ink Remover. Etch Clean Graphics uses one cleanser that is 25% acid and a second that is 50% acid. How many liters of each should be mixed to get 30L of a solution that is 40% acid?
Every time I do it I get a different answer.Please, show how you did it.
Answer by MathTherapy(10552) About Me  (Show Source):
You can put this solution on YOUR website!

Please help. Ink Remover. Etch Clean Graphics uses one cleanser that is 25% acid and a second that is 50% acid. How many liters of each should be mixed to get 30L of a solution that is 40% acid?
Every time I do it I get a different answer.Please, show how you did it.

Let the amount of 25% acid to be mixed, be T
Then amount of 50% acid to be mixed = 30 – T
Therefore, .25T + .5(30 – T) = .4(30)
.25T + 15 - .5T = 12
.25T - .5T = 12 – 15
- .25T = - 3
T, or amount of 25% acid to be mixed = %28-+3%29%2F-+.25, or highlight_green%2812+L%29

Amount of 50% acid to be mixed = 30 – 12, or highlight_green%2818L%29

You can do the check!!

Send comments and “thank-yous” to “D” at MathMadEzy@aol.com