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The arithmetic mean of the scores of a...

The arithmetic mean of the scores of a group of students in a test was 52. The brightest 20% of them secured a mean score of 80 and the dullest 25% a mean score of 31. The mean score of remaining 55% is

A

45% approx.

B

50% approx.

C

51.4% approx.

D

54.6% approx.

Text Solution

Verified by Experts

The correct Answer is:
B
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