SOLUTION: A cosmetologist has a bottle of 7% hydrogen peroxide solution and a bottle of 4% hydrogen peroxide solution. The cosmetologist needs 300 milliliter of a 5% hydrogen peroxide solut

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: A cosmetologist has a bottle of 7% hydrogen peroxide solution and a bottle of 4% hydrogen peroxide solution. The cosmetologist needs 300 milliliter of a 5% hydrogen peroxide solut      Log On


   

Question 279526: A cosmetologist has a bottle of 7% hydrogen peroxide solution and a bottle of 4% hydrogen peroxide solution. The cosmetologist needs 300 milliliter of a 5% hydrogen peroxide solution. Write and solve a linear system to find how many ML of each solution the cosmetologist needs to mix together.
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
.07x+.04y=300*.05
x+y=300
x=100 ML
y=200 ML