Question

When I was 4 years old, my brother was half my age. Now, I'm 18. How old is my brother ?

Answer 1

so first your brother was of 2 years. as half of 4=2 .so he was 2 years younger than you so subtract 2 from 18 that equals to 16 yrs so he is of 16 years now..

Answer 2

Hi there !!

When you were 4 yrs old , your brother's age was half your age , that is 2yrs.

Hence , you both have have a difference of 2yrs in age.

Now , if u are 18yrs . your brother's age = 
18 - 2 = 16 yrs