Question 112
The average marks obtained by 180 students in an examination is 50. If the average marks of passed students is 80 and that of the failed students is 40, then what is the number of students who failed the examination?
Solution
Let number of failed students in the class be x. Then number of passed students will be (180 - x)
And total number of students = 180 x 50 = 9000
$$\therefore$$ 40x + 80(180 - x) = 9000
$$\Rightarrow$$ 5400 = 40x (or) x = 135
Hence, option B is the correct answer.
Get AI Help
Create a FREE account and get:
- Free SSC Study Material - 18000 Questions
- 230+ SSC previous papers with solutions PDF
- 100+ SSC Online Tests for Free
