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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​

1 Answer

2 votes

Answer:

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.

User Gaurav Dhiman
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