Question

average marks of 3 batches of 40,50,60 students respectively is 45,55,70 find the average marks of all the students​

Answer 1

Answer:

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Answer 2

Answer:

Average=58.334

Explanation:

Average marks is equal to total marks divided by total number of students.

$average \: marks = \frac{45 \times 40 + 50 \times 55 + 60 \times 70}{40 + 50 + 60} = 58.334$