SOLUTION: Using the given variable write an equation or inequality that comes from the following word problem. Make no attempt to simplify or solve equation. How many liters of 40% acid sho

Click here to see ALL problems on Mixture Word Problems

Question 762268: Using the given variable write an equation or inequality that comes from the following word problem. Make no attempt to simplify or solve equation.
How many liters of 40% acid should be combined with a 20 liter mixture that is 15% acid in order to produce a mixture that is 25% acid? Use X= amount of 40% acid to add. (the equation will contain decimals)
Found 2 solutions by josmiceli, solver91311:
Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website!
Let = liters of 40% acid to be added
= liters of acid in 40% acid
liters of acid in 15% acid
-----------------

Answer by solver91311(24713) (Show Source):
You can put this solution on YOUR website!

You have 20 liters of 15% acid, so there are liters of pure acid in the 20 liters you have.

If there are liters of 40% acid, there are liters of pure acid that are being added.

Once you add liters to 20 liters, you have liters, and you want there to be liters of pure acid in the mixture.

So

John

Egw to Beta kai to Sigma
My calculator said it, I believe it, that settles it