a man is 30 years older than his son . in four years , his age will be twice the age of his son . the present age of this son is
"explanation : let ' s son age is x , then father age is x + 30 . = > 2 ( x + 4 ) = ( x + 30 + 4 ) = > 2 x + 8 = x + 34 = > x = 26 years answer : option e"
divide(subtract(30, subtract(multiply(const_2, const_2), const_2)), subtract(const_2, const_1))