SOLUTION: five gallons of 10% glucose solution is mixed wth x gallons of 40%glucose solution to obtain a 20% glucose solution. how many of the 40% solution were used?

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Question 73672This question is from textbook introductory& intermediate algebra
: five gallons of 10% glucose solution is mixed wth x gallons of 40%glucose solution to obtain a 20% glucose solution. how many of the 40% solution were used? This question is from textbook introductory& intermediate algebra

Answer by checkley75(3666) About Me  (Show Source):
You can put this solution on YOUR website!
5*.10+x*.40=(5+x).20
.5+.4x=1+.2x
.4x-.2x=1-.5
.2x=.5
x=.5/.2
x=2.5 gallons of 40% gluocose is required to make the 20% mixture.
proof
5*.10+2.5*.4=(5+2.5).2
.5+1=7.5*.2
1.5=1.5