In a class, there are three divisions. The number of students and the average marks in Mathematics in three divisions are 30, 40, 30 and 50, 40, 60 respectively. What are the average marks in Mathematics of the class?
Explanation:
From the problem, 30×50+40×40+30×6030+40+30 = 49
Hence, option (a).
» Your doubt will be displayed only after approval.
Help us build a Free and Comprehensive Preparation portal for various competitive exams by providing us your valuable feedback about Apti4All and how it can be improved.