Question

the mean age of five boys is 16 years. if the ages of four of them be 15 years, 18 years, 14 years & 19 years then find the age of the fifth boy.​

Answer 1

Given :

Mean = 16

To find :

Age of the fifth boy

So,

$x + 15 + 14 + 18 + 19 = 5 \times 16$

$= >x + 66= 80$

$= > x = 80 - 66$

$= > x = 14$

Hence, the age of the fifth boy is 14 years