The average mark of a student in 10 papers is 80. If the highest and the lowest scores are not considered, the average is 81. If his highest score is 92, find the lowest score.
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e. 60.
Total marks = 80 × 10 = 800
Total marks except highest and lowest marks = 81 × 8 = 648
So,
Summation of the highest marks and lowest marks will be = 800 - 648 = 152
When the highest mark is 92, the lowest mark will be = 152 - 92 = 60