Average age of M boys is ‘b’ years and of ‘n’ girls ‘c’ years. The average age of all together is ____ ? February 2, 2024 – by admin 0A. (mb + nc)/ (m – n) yearsB. (mb – nc)/ (m – n) yearsC. (mb – nc)/ (m + n) yearsD. (mb + nc)/ (m + n) years
