The average test score of three students in a class is 81 percentage points. if one student's score goes up by 2 percentage points, one student's score goes up by 4 percentage points, and the other student's score remains the same, what will the new average test score be

To the find average of the test scores, we need to find the mean.

To find the mean, all we need to do is add up all the numbers and then divide the answer by how many numbers there are

81 + 83 + 85 = 249

249 ÷ 3 = 83

Therefore, the new average is 83

Hope this helps

x = 12

y = 15

step-by-step explanation: