Mixture Problems — Engineering Board Exam Practice Questions

6 free engineering board exam reviewer questions on Mixture Problems (Algebra), each with the correct answer and a worked solution.

1. 1000 kg of steel containing 12.5% nickel is to be made by mixing a steel containing 15% nickel with another steel containing 5% nickel…
2. A 100 kg sugar solution is originally 4% by weight sugar. Sugar in water is boiled to reduce water content until the concentration is 5%…
3. Three gallons of 20% salt solution is mixed with 6 gallons of 50% salt solution. Determine the percentage of salt solution in the new…
4. A tank contains a mixture of acid and water. If 20 liters of acid are added, the mixture will be 70% acid. If 20 liters of water are added…
5. For a particular experiment, you need 5 liters of 10% solution. You find 7% and 12% solution on the shelf. How much of the 7% solution…
6. An alloy of silver and gold weighs 15 ounces in air and 14 ounces in water. Assuming that silver loses 1/10 of its weight in water and…