Sangeetha Pulapaka
0

8 students averaged 71%, so their total marks = 28 × 71 = 1,988


All 30 students in the class averaged 67%, so their total marks = 30 × 67 = 2,010.


2,010 - 1,988 = 22


So the two poor students scored only 22% between them.


⇒ Their mean mark was 11%


 https://www.mathsisfun.com/data/outliers.html