If the average marks of three batches of 56, 60 and 45 students respectively is 50, 55, 60, then the
average marks of all the students is Choose the correct choice from the following options:
A) 54.48
B) 54.68
C) 54.65
D) 54.58
E) None of these
Explanation:   (56Ã—50)+(60Ã—55)+(45Ã—60)/(56+60+46)=54.65   Answer: Option 54.65
<result>C</result>
If the average marks of three batches of 56, 60 and 45 students respectively is 50, 55, 60, then the
average marks of all the students is