The average marks of 30 students are 45 but after checking there are two mistake found.After adjustment if a student got 45 more marks and other student got 15 less marks then what will be the adjusted average?
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Sum of the wrong marks of 30 students = 30*45
=1350
Sum after correction= 1350-15+45
=1395-15
=1380
Therefore, the average marks after the adjustment= 1380/30
=46
46 is ur answer dear....
Hope it helps you.....
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