SOLUTION: In a chemistry class, 7 liters of a 4% silver iodide solution must be mixed with a 10% solution to get a 6% solution. How many liters of the 10% solution are needed?

Question 1049624: In a chemistry class, 7 liters of a 4% silver iodide solution must be mixed with a 10% solution to get a 6% solution. How many liters of the 10% solution are needed?
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Same problem, different numbers.
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How many gallons of a 50% antifreeze solution must be mixed with 100 gallons of 10% antifreeze to get a mixture that is 40% antifreeze?
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Add G gallons.
100*10 + G*50 = (100+G)*40
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