Question

Mitchell took a math exam today. If he got 63 out of 84 questions correct, what percentage did Mitchell get wrong? (answer using a percent sign) A) 20% B) 21% C) 25% D) 63%

Answer 1

Answer: C) 25%

Explanation:

Given : Mitchell took a math exam today.

He got 63 out of 84 questions correct.

Then, the number of questions are wrong = 84-63=21

Now, the percentage of question Mitchell get wrong will be :-

`\frac{\text{number of wrong questions}}{\text{total questions}}*100\%\\\\=(21)/(84)*100\%\\\\=(2100)/(84)\%=25\%`

Hence, the percentage of question Mitchell get wrong = 25%

Answer 2

Option C) 25%

Explanation:

we know that

To find out the percentage of incorrect questions, divide the number of incorrect questions by the total number of questions and multiply the result by 100

Mitchell got 63 out of 84 questions correct

so

The number of incorrect questions are

`84-63=21`

so

The percentage is equal to

`21/84=0.25`

Convert to percentage

`0.25*100=25\%`