• question_answer The ratio of A's and B's ages is 5 : 7. If the sum of their present ages is 48 years, what is the difference in their ages? A) 6 years             B) 7 yearsC) 8 years             D) None of these

Let the present age of A = 5x years and   the present age of B = 7x years Then,                $5x+7x=48$ $12x=48$                                                 $x=4$ Hence, the difference in their ages $=7x-5x$                              $=2x=2\times 4$                              $=8\,\,years$