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A student improved his score from 70 to 85 in a test. What is the percentage inc
A student improved his score from 70 to 85 in a test. What is the percentage increase in his score?
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A student improved his score from 70 to 85 in a test. What is the percentage increase in his score?
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Percentage increase = ((85 - 70) / 70) * 100 = (15/70) * 100 ≈ 21.43%
Questions & Step-by-step Solutions
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Q: A student improved his score from 70 to 85 in a test. What is the percentage increase in his score?
Solution:
Percentage increase = ((85 - 70) / 70) * 100 = (15/70) * 100 ≈ 21.43%
Steps: 6
Show Steps
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: approximately 21.43%.
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