Discussion :: Table charts
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What are the average marks obtained by all the seven students in Physics? (rounded off to two digit after decimal)
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Answer : Option B
Explanation :
Average marks obtained in Physics by all the seven students
= \(\frac { 1 } {7} \) x [(90% of 120) + (80% of 120) + (70% of 120) + (80% of 120) + (85% of 120) + (65% of 120) + (50% of 120) ]
= \(\frac { 1 } {7} \) x [ (90 + 80 + 70 + 80 + 85 + 65 + 50)% of 120 ]
= \(\frac { 1 } {7} \) x [ 520% of 120 ]
= \( \frac {624 } { 7 } \)
= 89.14
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