Question

A total of a students took a test and their overage Score was 86. If the average score of a students was 81, what was the average score for the remaining 5 students? ​

Answer 1

hiii everyone !!

Since the student's average test score on 4 tests is 78, then the sum of the first 4 test scores is 4*78=312. We need the sum of ALL 5 scores to be 5*80=400, so if is the 5th test score, then --> .