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

Question

3 years ago

5

umber of questions in the examination

1 answer:

Sonja [21] · Answer 1 · 2022-03-14T00:01:33+03:00

Answer:

There is a total 50 questions.

Step-by-step 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)

$x=9\div18\%$ (divide 18% on both sides)

$x=50$

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