(Independent Practice Worksheet now available in Word format)

©Copyright October 28, 2001. All rights reserved. This lesson is intended to be used by classroom teachers, not for publication. You have permission to make copies to use as classroom exercises. If you wish to make copies for any other purpose, please contact the author via email or snail mail at the address listed on the lesson plan page.

1. Shaquesha has added 2 liters of alcohol to 8 liters of a 48% sugar in alcohol solution. What is the sugar concentration of the resulting solution?

2. Jarod mixed 15 grams of salt with 210 grams of a 5% salt solution in water. What is the percent of salt in his new solution?

3. What is the concentration of salt in the solution obtained by mixing 25 ml of water with 125 ml of a 20% salt solution in water?

4. AnnaMaria has added 4 quarts of an alcohol in water solution to 1 quart of water and her ending product is a 36% alcohol in water solution. What was the concentration of the 4 quarts of alcohol solution that was added?

5. George wishes to increase the percent of salt in 50 ml of a 15% acid solution in water to 25% acid, how much pure acid must you add?

6. Victor has 40 kg of pinto beans which cost $0.69 per kilogram. How many kilograms of kidney beans at $0.89 per kilogram should be added for the complete mixture to have a value of $81.00?

7. Monaco's teacher has asked her to add acid to 8 gallons of a 32% acid in water solution to get a solution which is 69 7/9% (sixty-nine and seven-ninths percent) acid. How much pure acid should she add?

8. How many ounces of water should be evaporated from 90 ounces of a 10% salt solution in order to make a 15% salt solution?