A mixture contains 30% orange juice and 70% water. If 5 liters of the mixture is

Practice Questions

Q1
A mixture contains 30% orange juice and 70% water. If 5 liters of the mixture is taken out and replaced with 5 liters of pure orange juice, what will be the new percentage of orange juice in the mixture?
  1. 40%
  2. 50%
  3. 30%
  4. 60%

Questions & Step-by-Step Solutions

A mixture contains 30% orange juice and 70% water. If 5 liters of the mixture is taken out and replaced with 5 liters of pure orange juice, what will be the new percentage of orange juice in the mixture?
  • Step 1: Understand the original mixture. It has 30% orange juice and 70% water.
  • Step 2: Calculate the total volume of the mixture. We have 5 liters of the mixture.
  • Step 3: Find out how much orange juice is in the 5 liters. Since it's 30%, we calculate 30% of 5 liters: 0.30 * 5 = 1.5 liters of orange juice.
  • Step 4: When we remove 5 liters of the mixture, we also remove 1.5 liters of orange juice.
  • Step 5: After removing the 5 liters, we have 0 liters of the original mixture left.
  • Step 6: Now, we add back 5 liters of pure orange juice to the mixture.
  • Step 7: Calculate the new total amount of orange juice. We had 0 liters left and added 5 liters, so now we have 5 liters of orange juice.
  • Step 8: The total volume of the mixture is still 5 liters (the original 5 liters minus what was removed plus what was added).
  • Step 9: Calculate the new percentage of orange juice in the mixture. We have 5 liters of orange juice in a total of 5 liters: (5 liters / 5 liters) * 100 = 100%.
  • Step 10: Therefore, the new percentage of orange juice in the mixture is 100%.
  • Percentage Calculation – Understanding how to calculate the percentage of a component in a mixture after a change in volume.
  • Mixture and Replacement – Analyzing the effects of removing a portion of a mixture and replacing it with another substance.
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