Question

The total age of seven friends is 147. The average age of the friends after 4 years would be​

Answer 1

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Answer 2

The question is

the total age of 7 friends is 147.

The average age of friends after 4 years will be???

At present, the average age of 7 friends will be

$\frac{sum \: of \: ages}{total \: number \: of \: friends}$

$\frac{147}{7}$

After four years everybody age wil get increase by 4.

Therefore, the age of 7 friends after 4 years will be increased by 7*4=28.

then add up this value when calculating the age after 4 years.

The average age after 4 years would be

$\frac{147 + 28}{7} = \frac{175}{7} = 25$

Therefore, the average age of 7 friends after 4 years is 25.

#spj2

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