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__________?
Q1. 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__________?
Answer: 54.68
Explanation: The correct value is 54.68. Apply the formula or arithmetic step shown in the question and