Question

An examination consists of both a written exam and practical. In a particular collage , 80% of those appeared passed in the written exam while 70% of those appeared passed in the practical and 15% of those appeared failed in both. A total of 325 student passed in both. What is the total number of students that appeared in the examination?

Answer 1

Answer:

the ans of it is the=4855

Step-by-step explanation:

please mark me the barliest

Answer 2

Concept Introduction:

Students who passed in both theory and practical are passed overall.

Given: $80$% of those appeared passed in the written exam while $70$% of those appeared passed in the practical and $15$% of those appeared failed in both. A total of $325$ student passed in both.

To Find:

We have to find the value of, total number of students that appeared in the examination.

Solution:

According to the problem,

Failed students in chemistry=$100 - 80=20$%

Failed students in physics=$100 -70=30$%

Failed students in both the subjects=$15$%

Failed students only in chemistry=$20-15=5$%

Failed students only in physics=$30-15=15$%

Total failed students=$15+5+15=35$%

Total passed students=$100-35=65$%=$325$

Number of students appeared for exam=$325/65*100=500$

Final Answer:

The value of total number of students appeared for exam is $500$.

SPJ2