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The average age of M boys is ‘b’ years and of ‘n’ girls ‘c’ years. The average age of all together is?
- A(mb nc)/ (m + n) years
- B(mb + nc)/ (m - n) years
- C(mb + nc)/ (m + n) years
- D(mb nc)/ (m - n) years
Correct answer: C
Discussion 1
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CCommunity
(mb + nc)/ (m + n) years
(mb + nc) / (m+ n)
(mb + nc) / (m+ n)