Question 68
The following table shows the percentage of marks obtained by seven students in six different subjects in an examination.
What are the average marks obtained by all the seven students in Physics? (rounded off to two digits after the decimal)
Solution
Total marks obtained by all the seven students in Physics = (80 + 90 + 70 + 80 + 65 + 85 + 50)% of 120 = 120 $$\times \frac{520}{100} = 624
Average marks obtained by all the seven students in Physics = sum of terms/number of all terms = 6247 = 89.14
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