SOLUTION: Nathan needs a mixturee of 14% oats and 86% corn. He currently has 21 pounds of a mixture of 90% oats. How many pounds of corn should be added to the mixture? How much water s

Question 766321: Nathan needs a mixturee of 14% oats and 86% corn. He currently has 21 pounds of a mixture of 90% oats. How many pounds of corn should be added to the mixture?

How much water should be added to four liters of pure alcohol to make a mixture of 40% alcohol?

Jasmine wants to make 40% citric acid. If she has 1/2 liters of 0% citric acid, how many liters of 45% citric acid should she add?
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
Nathan, oats and corn:

The focus is on the percent of corn.
The available 21 pounds of corn-oats blend is 90% oats and must therefore be assumed 10% corn. Nathan wants to increase the percent of corn by adding some c pounds of 100% corn:

almost 1 full pound of corn.
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