Quantitative Aptitude Ques 1157

Question: 16 children are to be divided into two group A and B of 10 and 6 children, respectively. The average marks obtained by the children of group A is 75 and that of all the children is 76. Then, the average marks of the children of group B is

Options:

A) 76

B) 77

C) 78

D) 79

Show Answer

Answer:

Correct Answer: C

Solution:

  • Total marks of all children $ =16\times 76=1216 $ Total marks of children in group $ A=10\times 75=750 $ $ \because $ Total marks of children in group 8 $ =1216-750=466 $

$ \therefore $ Average marks of children of group B $ =\frac{466}{6}=77.6\approx 78 $

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