the average age of m boys is ‘b’ years and of ‘n’ girls ‘c’ years. the average age of all together is? Options: A . &nbsp(mb – nc)/ (m + n) years B . &nbsp(mb + nc)/ (m - n) years C . &nbsp(mb + nc)/ (m + n) years D . &nbsp(mb – nc)/ (m - n) years

the average age of m boys is ‘b’ years and of ‘n’ girls ‘c’ years.

Question

the average age of m boys is ‘b’ years and of ‘n’ girls ‘c’ years. the average age of all together is?

Options:

A . (mb – nc)/ (m + n) years

B . (mb + nc)/ (m - n) years

C . (mb + nc)/ (m + n) years

D . (mb – nc)/ (m - n) years

Answer: Option C
Explanation :

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