Question

the mean age of 5 children of a family is 12 years if 4 of them are respectively 6 11 13 and 16 years find the age of The Fifth Child

Answer 1

mean= sum of all values /total no. of values

let the age of fifth child be x

12=6+11+13+16+x / 5

12=46+x/5

12×5=46+x

60=46+x

60-46=x

14=x

hence the age of fifth child is 14 years

Answer 2

Here is your answer.