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Mrs. Riley recorded this information from a recent test taken by all of her students. Using the data, what was the average percent score for these $100$ students?

PLEASE HELP


Sagot :



[ 2*40 + 3*50 + 10*60 + 25*70 + 35*80 + 18*90 + 7*100 ] / 100 =

[7700 ] / 100

=77