The average marks obtained by a class of 60 students is 65. The average marks of half of the students is found to be 85. The average marks of the remaining students is :
A. 35
B. 45
C. 55
D. 65
Show Answer
Answer-B
Solution-
Solution(By Apex Team)
Let us take 30 students average marks = x
Then,
$\begin{array}{l}\text{30x + (3 × 85) = 60 × 65}\\
\text{x = 130 – 85}\\
\text{x = 45}\end{array}$
EN 
HI