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A student improved his score from 70 to 85 in a subject. What is the percentage

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Question: A student improved his score from 70 to 85 in a subject. What is the percentage increase in his score?

Options:

  1. 20%
  2. 21.43%
  3. 25%
  4. 30%

Correct Answer: 21.43%

Solution: 

Percentage increase = ((85 - 70) / 70) * 100 = 21.43%.

A student improved his score from 70 to 85 in a subject. What is the percentage

Practice Questions

Q1
A student improved his score from 70 to 85 in a subject. What is the percentage increase in his score?
  1. 20%
  2. 21.43%
  3. 25%
  4. 30%

Questions & Step-by-Step Solutions

A student improved his score from 70 to 85 in a subject. What is the percentage increase in his score?
Correct Answer: 21.43%
  • Step 1: Identify the original score, which is 70.
  • Step 2: Identify the new score, which is 85.
  • Step 3: Calculate the difference between the new score and the original score: 85 - 70 = 15.
  • Step 4: Divide the difference by the original score: 15 / 70.
  • Step 5: Multiply the result by 100 to convert it to a percentage: (15 / 70) * 100.
  • Step 6: Calculate the final result: 15 / 70 = 0.2143, then 0.2143 * 100 = 21.43%.
  • Percentage Increase – The calculation of how much a value has increased in relation to its original value, expressed as a percentage.
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