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A mixture of two alloys contains 60% copper and 40% zinc. If 50 kg of the mixtur

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Question: A mixture of two alloys contains 60% copper and 40% zinc. If 50 kg of the mixture is used, how much zinc is there?

Options:

  1. 15 kg
  2. 20 kg
  3. 25 kg
  4. 30 kg

Correct Answer: 20 kg

Solution: 

Zinc = 40% of 50 kg = 0.40 * 50 = 20 kg.

A mixture of two alloys contains 60% copper and 40% zinc. If 50 kg of the mixtur

Practice Questions

Q1
A mixture of two alloys contains 60% copper and 40% zinc. If 50 kg of the mixture is used, how much zinc is there?
  1. 15 kg
  2. 20 kg
  3. 25 kg
  4. 30 kg

Questions & Step-by-Step Solutions

A mixture of two alloys contains 60% copper and 40% zinc. If 50 kg of the mixture is used, how much zinc is there?
  • Step 1: Understand that the mixture contains 40% zinc.
  • Step 2: Know that the total weight of the mixture is 50 kg.
  • Step 3: To find the amount of zinc, calculate 40% of 50 kg.
  • Step 4: Convert 40% to a decimal, which is 0.40.
  • Step 5: Multiply 0.40 by 50 kg to find the weight of zinc.
  • Step 6: Perform the calculation: 0.40 * 50 = 20 kg.
  • Step 7: Conclude that there are 20 kg of zinc in the mixture.
  • Percentage Calculation – Understanding how to calculate a percentage of a total quantity.
  • Mixture Composition – Analyzing the components of a mixture based on given percentages.
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