SOLUTION: A pharmacist has a 45% solution and a 35% acid solution. How many litter of each must be mixed to form 80 litters of a 40% acid solution?

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Question 798596: A pharmacist has a 45% solution and a 35% acid solution. How many litter of each must be mixed to form 80 litters of a 40% acid solution?
Answer by Finavon(81) About Me  (Show Source):
You can put this solution on YOUR website!
Equal volumes produce average of concentration
40 L of each
Check :
40 x 45% 1800
40 x 35% 1400
Total 80 3200 ie 40%