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The marks obtained in mathematics by 12 students are 35, 30, 25, 15, 20, 47, 30, 40, 45, 50, 40, 43. Find the average marks of 12 students. How many students did get more marks than the average marks?
1. Six
2. Five
3. Seven
4. Three

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Correct Answer - Option 1 : Six

Given:

The marks obtained in mathematics by 12 students are 35, 30, 25, 15, 20, 47, 30, 40, 45, 50, 40, 43

Formula used:

Average = Sum of all observation/Total number of observation

Calculation:

Average = (35 + 30 +  25 + 15 + 20 + 47 + 30 +  40 + 45 + 50 + 40 + 43)/12 = 420/12 = 35

Here marks 47, 40, 45, 50, 40, 43 are more than 35

Required answer = Six

∴ Required answer is Six.

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