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In a national event, if 70% of the attendees are adults and there are 1,000 atte

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Question: In a national event, if 70% of the attendees are adults and there are 1,000 attendees, how many are not adults?

Options:

  1. 300
  2. 200
  3. 400
  4. 500

Correct Answer: 300

Solution: 

Number of non-adults = 1,000 * (1 - 0.70) = 1,000 * 0.30 = 300.

In a national event, if 70% of the attendees are adults and there are 1,000 atte

Practice Questions

Q1
In a national event, if 70% of the attendees are adults and there are 1,000 attendees, how many are not adults?
  1. 300
  2. 200
  3. 400
  4. 500

Questions & Step-by-Step Solutions

In a national event, if 70% of the attendees are adults and there are 1,000 attendees, how many are not adults?
  • Step 1: Understand that 70% of the attendees are adults.
  • Step 2: Calculate the percentage of attendees who are not adults. This is 100% - 70% = 30%.
  • Step 3: Convert the percentage of non-adults into decimal form. 30% as a decimal is 0.30.
  • Step 4: Multiply the total number of attendees (1,000) by the decimal for non-adults (0.30).
  • Step 5: Perform the calculation: 1,000 * 0.30 = 300.
  • Step 6: Conclude that there are 300 attendees who are not adults.
  • Percentage Calculation – Understanding how to calculate a percentage of a total and its complement.
  • Basic Arithmetic – Performing multiplication and subtraction to find the required values.
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