Question

The average Olympiad score of 10 students who are selected to represent the school for a Math

quiz is 85. If one more student whose score is 88 is added to this group of 10 students, then now

what is the average score of this group of 11 students?​

Answer 1

Answer:

I am not able to give answer

Answer 2

Answer:  85.272727

Step-by-step explanation:

since the mean of the 10 scores is 85,

therefore (sum of 10 scores)/10 = 85

So the sum of those 10 scores = 85 x 10 = 850

Score of the new student is 88

Then the sum of the 11 scores = 850+88 = 938

Hence new average = (sum of 11 scores)/ no. of scores

                                  = 938/11

                                  = 85.2727

Hope its helpful. Thank u