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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 copper is there?

Options:

  1. 20 kg
  2. 25 kg
  3. 30 kg
  4. 35 kg

Correct Answer: 30 kg

Solution: 

Copper = 60% of 50 kg = 0.60 * 50 = 30 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 copper is there?
  1. 20 kg
  2. 25 kg
  3. 30 kg
  4. 35 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 copper is there?
  • Step 1: Understand that the mixture is made up of 60% copper and 40% zinc.
  • Step 2: Know that you have a total of 50 kg of the mixture.
  • Step 3: To find out how much copper is in the mixture, calculate 60% of 50 kg.
  • Step 4: Convert 60% to a decimal by dividing by 100, which gives you 0.60.
  • Step 5: Multiply 0.60 by 50 kg to find the amount of copper: 0.60 * 50 = 30 kg.
  • Step 6: Conclude that there are 30 kg of copper in the mixture.
  • Percentage Calculation – Understanding how to calculate a percentage of a total quantity.
  • Mixture Composition – Interpreting the composition of a mixture in terms of its components.
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