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A country plans to reduce its carbon emissions by 10% each year. If the current

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Question: A country plans to reduce its carbon emissions by 10% each year. If the current emissions are 500 tons, what will be the emissions after 1 year? (2022)

Options:

  1. 450 tons
  2. 400 tons
  3. 500 tons
  4. 550 tons

Correct Answer: 450 tons

Exam Year: 2022

Solution: 

Emissions after 1 year = 500 - (10% of 500) = 500 - 50 = 450 tons.

A country plans to reduce its carbon emissions by 10% each year. If the current

Practice Questions

Q1
A country plans to reduce its carbon emissions by 10% each year. If the current emissions are 500 tons, what will be the emissions after 1 year? (2022)
  1. 450 tons
  2. 400 tons
  3. 500 tons
  4. 550 tons

Questions & Step-by-Step Solutions

A country plans to reduce its carbon emissions by 10% each year. If the current emissions are 500 tons, what will be the emissions after 1 year? (2022)
  • Step 1: Identify the current emissions, which is 500 tons.
  • Step 2: Calculate 10% of the current emissions. To do this, multiply 500 by 0.10 (which is the decimal form of 10%).
  • Step 3: 10% of 500 tons is 50 tons (because 500 * 0.10 = 50).
  • Step 4: Subtract the 10% (50 tons) from the current emissions (500 tons).
  • Step 5: 500 tons - 50 tons = 450 tons.
  • Step 6: The emissions after 1 year will be 450 tons.
  • Percentage Reduction – Understanding how to calculate a percentage of a number and apply it to find the new value after reduction.
  • Basic Arithmetic – Performing subtraction after calculating the percentage.
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