a man is 36 years older than his son . in three years , his age will be thrice the age of his son . the present age of this son is
"let ' s son age is x , then father age is x + 36 . = > 3 ( x + 3 ) = ( x + 36 + 3 ) = > 3 x + 9 = x + 39 = > 2 x = 30 years = 15 years answer : e"
divide(subtract(36, subtract(multiply(const_2, const_2), const_2)), subtract(const_2, const_1))