SOLUTION: How many gallons of 50% antifreeze solution must be mixed with 70 gallons of 25% antifreeze to get a mixture that is 40% antifreeze?
Algebra.Com
Question 215529: How many gallons of 50% antifreeze solution must be mixed with 70 gallons of 25% antifreeze to get a mixture that is 40% antifreeze?
Answer by nerdybill(7384) (Show Source): You can put this solution on YOUR website!
How many gallons of 50% antifreeze solution must be mixed with 70 gallons of 25% antifreeze to get a mixture that is 40% antifreeze?
.
Let x = amount of 50% antifreeze added
then
.50x + .25(70) = .40(70 + x)
.50x + 17.5 = 28 + .40x
.50x = 10.5 + .40x
.10x = 10.5
x = 10.5/.10
x = 105 gallons
RELATED QUESTIONS
How many gallons of a 50% antifreeze solution must be mixed with 70 gallons of 10%... (answered by stanbon,Alan3354)
How many gallons of a 60% antifreeze solution must be mixed with 70 gallons of 25
%... (answered by josgarithmetic)
how many gallons of a 50% antifreeze solution must be mixed with 60 gallons of 25%... (answered by mananth)
how many gallons of a 50% antifreeze soltuion must be mixed with 70 gallons of 15%... (answered by scott8148,checkley77)
how many gallons of a 60% antifreeze solution must be mixed with 70 gallons of 30%... (answered by jorel1380)
How many gallons of 70% antifreeze solution must be mixed with 90 gallons of 25%... (answered by oberobic)
How many gallons of a 50% antifreeze solution must be mixed with 100 gallons of a 30%... (answered by checkley79)
How many gallons of a 70% antifreeze solution must be mixed with 80 gallons of 25%... (answered by jorel1380)
How many gallons of a 80% antifreeze solution must be mixed with 80 gallons of 25%... (answered by checkley79)