Isabella and Mason do maths practice questions every day. One day, Isabella answered 90% of the questions correctly while Mason answered 65% of them correctly. How much better did Isabella perform than Mason?Express your answer as a percentage of Mason's score, rounded to the nearest whole number.
Question
Isabella and Mason do maths practice questions every day. One day, Isabella answered 90% of the questions correctly while Mason answered 65% of them correctly. How much better did Isabella perform than Mason?Express your answer as a percentage of Mason's score, rounded to the nearest whole number.
Solution
To solve this problem, we first need to find out how much better Isabella performed than Mason in terms of percentage.
Isabella answered 90% of the questions correctly and Mason answered 65% of the questions correctly.
So, the difference in their performance is 90% - 65% = 25%.
Next, we need to express this difference as a percentage of Mason's score.
To do this, we divide the difference by Mason's score and multiply by 100%.
So, (25% ÷ 65%) x 100% = 38.46%, which rounds to 38% when rounded to the nearest whole number.
Therefore, Isabella performed 38% better than Mason.
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