Question

The average of marks secured by 35 students is 72. If the marks secured by one student was written as 36 instead of 86 then find the correct average.

• A. 73.4
• B. 75.2
• C. 73.8
• D. 72.7

Answer 1

Answer:

A. 73.4

Average marks of 35 sutdents=72 sum of marks=72x35=2520 Correct sum=2520-36+86=2570 Correct average-2570/35=73.4