Question

The average age of M boys is 'b' years and of N girls 'c' years. The
average age of all together is?​

Answer 1

Answer:

b+c/2

Step-by-step explanation:

M boys = b years

N boys = c years

Average = sum of observations / no. of observations

Average age of all together = b+c/2.

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Answer 2

=> Answer:

average age of m boys is B

and,

average age of N girls is C ..

average of together is

.

average of boys + average of girls

--------------------------------------------------

total no.of both

B+ C/M+N