The average marks of 32 boys of the section A of class 10th is 60 whereas the average marks of 40 boys of section B of class 10th is 33. The average marks for both the sections combined together is:

The average marks of 32 boys of the section A of class 10th is 60 whereas the average marks of 40 boys of section B of class 10th is 33. The average marks for both the sections combined together is:
[A]44
[B]45\frac{1}{2}
[C]45
[D]46\frac{1}{2}

45
Required average = \frac{32\times 60 + 33\times 40}{72}
= \frac{1920+1320}{72} = \frac{3240}{72} = 45
Hence option [C] is the right answer.

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