Question

Grandpa adi has four grandchildren. Each grandchild is precisely one year older than the next oldest one. One year Adi noticed that if u added the ages of his four grandchildren, you would get his age. How old is grandpa?

Answer 1

Answer:

This is because we can consider the ages of the children to be.

a = age of first child

first child age: a

second child: a+1

third child: a+2

fourth child:a+3

so age of grandpa = 4a+ 6

minusing 6 from both sides

age of grandpa - 6 = 4a