What is the average marks obtained by all the students in Geography?

38.26

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37.26

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37.16

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39.16

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None of these

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Solution

The correct option is D 39.16
Average marks obtained by all the students in Geography
$= \frac{50 \times (85 + 80 + 67 + 72 + 79 + 87)}{100 \times 6} = \frac{470 \times 50}{600} = \frac{235}{6} = 39.16$

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\begin{matrix} S u b j e c t & H i s t o r y & G e o g r a p h y & M a t h s & S c i e n c e & E n g l i s h & H i n d i M a x . M a r k s & 75 & 75 & 100 & 150 & 50 & 60 A & 82 & 66 & 59 & 76 & 62 & 65 B & 76 & 72 & 65 & 84 & 74 & 75 C & 56 & 78 & 71 & 66 & 86 & 70 D & 64 & 80 & 68 & 72 & 66 & 80 E & 48 & 68 & 83 & 88 & 56 & 60 F & 60 & 74 & 79 & 64 & 80 & 85 \end{matrix}