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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 :
Answer & Solution
Correct Answer:
Option
B
Let us take 30 students average marks = x
Then,
30x + (3 × 85) = 60 × 65
x = 130 - 85
x = 45
Then,
30x + (3 × 85) = 60 × 65
x = 130 - 85
x = 45
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