SOLUTION: A nurse has two solutions that contain different concentrations of a certain medication. One is a 20% concentration and the other is a 5% concentration. How many cubic centimeters

Question 705187: A nurse has two solutions that contain different concentrations of a certain medication. One is a 20% concentration and the other is a 5% concentration. How many cubic centimeters of each should he mix to obtain 10 cc of a 11% solution?
Answer by josgarithmetic(39618) (Show Source): You can put this solution on YOUR website!
(y*0.2+x*0.05)/10=0.11
x+y=10
Where x cc of 5% solution, y cc of 20% solution.

Transform the rational equation to 20y+5x=10*11, divide by 5,
4y+x=22

Now you have the system
x+4y=22
x+y=10

Subtract second equation from first equation and obtain 3y=12, then y=4.
Since , .
RELATED QUESTIONS
A nurse has two solutions that contain different concentrations of a certain medication.... (answered by josgarithmetic)

(a) A nurse has two solutions that contain different concentrations of a certain... (answered by stanbon)

(a) A nurse has two solutions that contain different concentrations of a certain... (answered by richwmiller)

A nurse has two solutions that contain different concentrations of a certain medication.... (answered by Alan3354)

Hello! Would anyone please help with the following word-problem that requires the... (answered by Nate)

A nurse has two solutions that contain different concentrations of a certain medication.... (answered by Alan3354,greenestamps)

Hi! I have a problem that has stumped me. Here it is: A nurse has 2 solutions that... (answered by ankor@dixie-net.com)

A nurse has two solutions that contain different concentrations of a certain... (answered by josgarithmetic)