The average marks of the entire class are :

There are 20 girls and 30 boys in a class, and their respective average marks are found to be 55 and 58. The average marks of the entire class are
(a) 56.5
(b) 56.6
(c) 56.7
(d) 56.8

Anurag Mishra Professor Asked on 12th January 2016 in Maths.
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    Answer: (d) 56.8 

    Anurag Mishra Professor Answered on 12th January 2016.
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