Hi ! Here is the third challenge. You have to do some math to find the right solution.

 

1. My father is 50 years old. My mother is 2 years older .

               I am 27 years old. My sister is 4 years younger than me.

               How old are my sister and my mother ?

 

2. My grandma is 77 years old. My aunt is 37 years younger than my grandma . How old is she ?

 

3. When my father was 10 his brother was half of his age. When my father will be 100 how old will his brother be ?