If the average marks of three batches of 58, 60 and 45 students respectively is 50, 55, 60, then the
average marks of all the students is	Pick.
A) 54.48
B) 54.68
C) 54.6
D) 54.58
E) None of these
Explanation:   (58Ã—50)+(60Ã—55)+(45Ã—60)/(55+60+45)=54.60   Answer: Option 54.6
<result>C</result>
If the average marks of three batches of 58, 60 and 45 students respectively is 50, 55, 60, then the
average marks of all the students is