SOLUTION: How many gallons of 50% antifreeze must be mixed with 80 gallons of 20% antifreeze to get a mixture that is 40% antifreeze?
Algebra.Com
Question 147291: How many gallons of 50% antifreeze must be mixed with 80 gallons of 20% antifreeze to get a mixture that is 40% antifreeze?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = gallons of 50% antifreeze to be added
How much antifreeze is in it?
gallons
How much antifreeze is in the 20% solution?
gallons
What,s the total amount of solution you end up with?
In words:
(amount of antifreeze) / (total amount of solution) = % antifreeze
multiply both sides by
160 gallons of the 50% antifreeze must be added
check answer:
OK
RELATED QUESTIONS
how many gallons of a 50% antifreeze solution must be mixed with 60 gallons of 20%... (answered by mananth)
how many gallons of 50% antifreeze solution must be mixed with 90 gallons of 20%... (answered by josgarithmetic)
How many gallons of 60% antifreeze solution must be mixed with 80 gallons of 30%... (answered by ptaylor)
How many gallons of a 50% antifreeze solution must be mixed with 100 gallons of a 30%... (answered by checkley79)
how do you do this could you explain it to me really slow {{{how many gallons of 50%... (answered by stanbon)
how many gallons of a 90% antifreeze solution must be mixed with 70 gallons of 20%... (answered by lwsshak3)
how many gallons of a 50% antifreeze solution must be mixed with 90 gallons of 15%... (answered by Marth)
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 50% antifreeze solution must be mixed with 60 gallons of 25%... (answered by mananth)