Q370
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
AnswerC.
55
D.
65
Answer: Option B
Solution
Answer: Option B
Solution:
Let us take 30 students average marks = xThen,
30x + (3 × 85) = 60 × 65
x = 130 - 85
x = 45