The average marks obtained by 180 students in | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) Let the number of failed students be $x$.Then,the number of passed students is $(180 - x)$.The total marks obtained by all students is $180 	imes

Vedclass · Accepted Answer

$135$

Vedclass · Answer

(B) Let the number of failed students be $x$.Then,the number of passed students is $(180 - x)$.The total marks obtained by all students is $180 	imes 50 = 9000$.The total marks obtained by passed students is $(180 - x) 	imes 80$.The total marks obtained by failed students is $x 	imes 40$.According to the problem:$(180 - x) 	imes 80 + 40x = 9000$$14400 - 80x + 40x = 9000$$14400 - 40x = 9000$$40x = 14400 - 9000$$40x = 5400$$x = \frac{5400}{40} = 135$.Therefore,the number of students who failed the examination is $135$.

The average marks obtained by $180$ students in an examination is $50$. If the average marks of passed students is $80$ and the average marks of failed students is $40$,then what is the number of students who failed the examination?

Similar Questions

The sum of three consecutive odd numbers is $38$ more than the average of these numbers. What is the first of these numbers?

The average of six numbers is $32$. If each of the first three numbers is increased by $2$ and each of the remaining three numbers is decreased by $4$,then the new average is?

The average weight of $15$ oarsmen in a boat is increased by $1.6\, kg$ when one of the crew,who weighs $42\, kg$,is replaced by a new man. Find the weight of the new man (in $kg$).

The average age of $5$ sisters is $20 \, \text{years}$. If the age of the youngest sister is $4 \, \text{years}$,what was the average age of the group of sisters at the time of the birth of the youngest sister?

In an examination,out of $20$ students in a class,in Mathematics $2$ students scored $100$ marks,$3$ students scored $0$,and the average marks for the rest of the students was $40$. What is the average mark of the whole class? (in marks)

Vedclass Test Series

Exam Paper Generator

Online Exam Module