Question

a student has answered 82% of the questions correctly in the examination. He made mistakes in 9 questions Calculate the toltal number of questions in the examination​

Answer 1

There is a total 50 questions.

Explanation:

Let x = total questions in the exam

Since 82% of the test was scored correctly, that means 18% of the student's exam was scored incorrectly.

With this information we can write:

`18\%x=9` (Given that the student made 9 mistakes)

`x=9/18\%` (divide 18% on both sides)

`x=50`

∴ There was a total of 50 questions in the examination.