An amount of money is to be divided between P, Q and R in the ratio of 3:7:12. If the difference between the shares of P and Q is Rs.2400, what will be the difference between Q and R's share?  Choose the correct answer:
A) 3000  B) 2887  C) 2666  D) 2578  E) 2771
4 --- 2000   5 --- ? =&gt; 3000   3000nswer: 3000
<result>A</result>
An amount of money is to be divided between P, Q and R in the ratio of 3:7:12. If the difference between the shares of P and Q is Rs.2400, what will be the difference between Q and R's share?