Question

Average marks obtained by 40 students is 56. If the average marks of 8 students who failed in the examination are 10, what are the average marks of students who passed the examination?

• A. 67.50
• B. 65
• C. 76.55
• D. 42.45

Answer 1

Answer:

A. 67.50

Total marks obtained by 40 students = 56 × 40 = 2240 Average marks of 8 students who failed in the examination = 10 Marks obtained by failed students/8 = 10 Marks obtained by failed students = 10 × 8 = 80 Total marks obtained by passed students = 2240 - 80 = 2160 Average marks of passed students = 2160/(40 - 8) = 2160/32 = 67.5