Question

In a test of 500 boys and 420 girls, 40% of the boys and 45% of the girls passed. What is the
percentage of students who failed?​

Answer 1

Answer:

15 percent students are fail

Answer 2

Given,

Number of boys = 500

Number of girls = 420

40% boys passed

45% girls passed

To find,

The percentage of students of failed.

Solution,

We can easily solve this mathematical problem by using the following mathematical process.

Failed boys = 100%-40% = 60%

Failed boys number = 500 × 60/100 = 300

Failed girls = 100%-45% = 55%

Failed girls number =420 × 55/100 = 231

Total students appeared in the exam = (500+420) = 920

Total students failed in the exam = (300+231) = 531

Percentage of failed students = 100 × 531/920 = 57.71% (approx.)

Hence, approximately 57.71 students failed in the exam.