Question

a class has 60 students.Given that 85% passed a science test. Find the number of students who failed and then convert o %

Answer 1

Given:

Total students = 60

Student passed = 85%

To find:

The number of students who failed and  then convert it in %.

Solution:

We have,

Number of passed student = 85% of Total students

                                            = $\dfrac{85}{100}\times 60$

                                            = $51$

So, number of passes students is 51.

Number of students who failed = Total students - Passes students

                                                    = $60-51$

                                                    = $9$

So, number of students who failed is 9.

$\text{Fail}\%=\dfrac{\text{Failed students}}{\text{Total students}}\times 100$

$\text{Fail}\%=\dfrac{9}{60}\times 100$

$\text{Fail}\%=15$

Therefore, 15% students fail in the test.