Average marks of total 8 subjects were calculated to be 74. Later it was discovered that marks of 1 subject was misread as 98 instead of 89. What is the correct average?
A68.75
B70.25
C72.875
D82.5
Answer:
C. 72.875
Read Explanation:
Total marks in 8 subjects = 74 × 8= 592
⇒ Corrected marks = 592 - 98 + 89 = 583
Correct average = 583/8 = 72.875