Lessons

General Aptitude
7.1 Average - General Questions

2 / 15

Q.

If the average marks of three batches of 55, 60 and 45 students respectively is 50, 55, 60, then the average marks of all the students is:

View Answer

Correct choice: B

Explanation:

Required average
= (55 x 50 + 60 x 55 + 45 x 60)/(55 + 60 + 45)
 
 
= (2750 + 3300 + 2700)
160
 
= 8750/
160
  = 54.68
2 / 15