If a mixture contains 20% alcohol and 80% water, how much alcohol is present in

Practice Questions

Q1
If a mixture contains 20% alcohol and 80% water, how much alcohol is present in 50 liters of the mixture?
  1. 5 liters
  2. 10 liters
  3. 15 liters
  4. 20 liters

Questions & Step-by-Step Solutions

If a mixture contains 20% alcohol and 80% water, how much alcohol is present in 50 liters of the mixture?
  • Step 1: Understand that the mixture is made up of 20% alcohol and 80% water.
  • Step 2: Know that 20% means 20 out of every 100 parts of the mixture is alcohol.
  • Step 3: We need to find out how much alcohol is in 50 liters of this mixture.
  • Step 4: To find 20% of 50 liters, we can use the formula: (percentage / 100) * total amount.
  • Step 5: Plug in the numbers: (20 / 100) * 50.
  • Step 6: Calculate 20 / 100, which equals 0.2.
  • Step 7: Now multiply 0.2 by 50 liters: 0.2 * 50 = 10 liters.
  • Step 8: Therefore, there are 10 liters of alcohol in the 50 liters of mixture.
  • Percentage Calculation – Understanding how to calculate a percentage of a total quantity.
  • Mixture Composition – Recognizing the components of a mixture and their respective proportions.
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