SOLUTION: A chemist has one solution that is 25% acid and a second that is 50% acid. How many liters if each should be mixed to 10 L of a solution that is 40% acid?

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: A chemist has one solution that is 25% acid and a second that is 50% acid. How many liters if each should be mixed to 10 L of a solution that is 40% acid?      Log On


   

Question 159667This question is from textbook Prentice Hall Algebra 2 with Trignometry
: A chemist has one solution that is 25% acid and a second that is 50% acid. How many liters if each should be mixed to 10 L of a solution that is 40% acid? This question is from textbook Prentice Hall Algebra 2 with Trignometry

Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
.50X+.25(10-X)=.4*10
.50X+2.5-.25X=4
.25X=4-2.5
.25X=1.5
X=1.5/.25
X=6 LITERS OF 50% ACID.
10-6=4 LITERS OF 25% ACID.
PROOF:
.50*6+.25*4=.4*10
3+1=4
4=4