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In an examination average marks obtained...

In an examination average marks obtained by the girls of a class is 85 and the average marks obtained by the boys of the same class is 87. If the girls and boys are in the ratio 4:5, average marks of the whole class (approximately) is closest to

A

85.9

B

86.5

C

86.4

D

86.1

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CHAMPION PUBLICATION-2015 TIER-II PAPER(17)-EXERCISE
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  3. In an examination average marks obtained by the girls of a class is 85...

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  6. Average of n numbers is a. The first number is Increased by 2, second ...

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