Canadian Forces Aptitude Test (CFAT) Practice

By what percentage did Molly increase her bowling score if she achieved a new score of 75 from her original score?

1. 10%

2. 15%

3. 20%

4. 25%

The correct answer is: 20%

To find the percentage increase in Molly's bowling score, you first need to determine the original score. The calculation for percentage increase is based on the formula: Percentage Increase = [(New Score - Original Score) / Original Score] x 100 In this scenario, if Molly's new score is 75 and the calculated increase is 20%, this suggests that the increase from her original score to the new score is significant. To validate this, you can work backward using the percentage increase: Let’s denote the original score as X. From the percentage increase formula: 20% increase means Molly's new score is 120% of her original score. This can be expressed as: 75 = X * (1 + 20/100) Rearranging gives: X = 75 / 1.2 X = 62.5 Thus, her original score is calculated to be 62.5. The increase in score is then: Increase = New Score - Original Score = 75 - 62.5 = 12.5 Now, to find the true percentage increase: Percentage Increase = (12.5 / 62.5) * 100 = 20% This confirms that Molly increased her bowling score by