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What is the average marks of all the students?

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The average marks of three batches of 55, 60 and 45 students respectively is 50, 55, 60.
What is the average marks of all the students?

posted May 26, 2016 by Ritika

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1 Answer

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55 students * 50 avg mark = 2750
60 * 55 = 3300
45 * 60 = 2700

Then, Adding the total marks, 2750 + 3300 + 2700 = 8750
Adding the total students 55 + 60 + 45 = 160
The average mark will be : 8750/ 160 = 54.6875

answer May 27, 2016 by anonymous



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