Four years ago, Kody was only half as old as Mohamed. If Mohamed is currently twice 30 years old, how old is Kody?
Mohammed is currently 2*30 = <T>multiply(2, 30)=60 years old.
four years ago, Mohammed was 60-4 = <T>subtract(60, 4)=56 years old
Four years ago, Kody was half Mohammed's age, which is 56/2 = <T>divide(56, 2)=28.0 years old.
Currently, Kody is 28+4 = <T>add(28, 4)=32 years old
