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Sir pls solve the following.

Asked by rsudipto | 30 Dec, 2018, 20:51: PM

Expert Answer

Let the number of mens be x and the number of women be 100 - x.

Combined mean = 30

begin mathsize 16px style fraction numerator stack straight x subscript 1 with bar on top space straight n subscript 1 plus space stack straight x subscript 2 with bar on top space straight n subscript 2 over denominator space straight n subscript 1 plus straight n subscript 2 end fraction equals straight x with bar on top straight x with bar on top space equals space 30 fraction numerator begin display style 32 straight x plus open parentheses space 100 minus straight x close parentheses space 27 end style over denominator begin display style 100 end style end fraction space equals space 30 Solving space this space we space get space straight x equals 60 The space number space of space mens space 40 percent sign space then space the space number space of space womens space 60 percent sign. end style

Answered by Sneha shidid | 31 Dec, 2018, 10:12: AM

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