Question

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?

• A. 68.75
• B. 70.25
• C. 72.875
• D. 82.5

Answer 1

Answer:

C. 72.875

Total marks in 8 subjects = 74 × 8= 592 ⇒ Corrected marks = 592 - 98 + 89 = 583 Correct average = 583/8 = 72.875