a man is 28 years older than his son . in two years , his age will be twice the age of his son . the present age of the son is ?
"let the son ' s present age be x years . then , man ' s present age = ( x + 28 ) years . ( x + 28 ) + 2 = 2 ( x + 2 ) x + 30 = 2 x + 4 = > x = 26 . answer : d"
divide(subtract(28, subtract(multiply(const_2, const_2), const_2)), subtract(const_2, const_1))