Question

the mean age of family containing 10 members is 24,what will be their mean age after 5 years​

Answer 1

Answer:

The mean age of the family after 5 years = 29

Step-by-step explanation:

Given :

Mean age of family containing 10 members = 24

To find :

The mean age of the family after 5 years

Taken :

To find the mean age of the family after 5 years use this formula -:

$\boxed{\tt{M_{5years}=\dfrac{(24\times10)+(5\times10)}{10}}}$

Here , (24× 10) because first we have to find the total age of the family and (5×10) because sum of the age increase of the family .

Solution :

$:\Rightarrow\tt{M_{5years}=\dfrac{(24\times10)+(5\times10)}{10}}$

$:\Rightarrow\tt{M_{5years}=\dfrac{240+50\:\:years}{10}}$

$:\Rightarrow\tt{M_{5years}=\cancel{\dfrac{290years}{10}}}$

$:\Rightarrow\tt{M_{5years}=29}$

So , the mean age of the family after 5 years is 29 years ...