Because Meena's test turned out to be more difficult than she intended it to be, the teacher decided to adjust the grades by example, if a student missed 25 points, she received a 5 instead of Before the grades were adjusted the class average was M. What was the average after the adjustment, if the total mark of the test is 100?

A 50+M/2

B 1/2(100-M)

C 100-M/2

D 1/2(50+M)

Solution

Correct Answer: Option A

Current average = M

Total Mark is 100

So the new average is (100+M)/2 = 50+M/2

Solution

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