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.2800, what will be the difference between Q and R's share?  Pick one.
A) 2788  B) 3500  C) 7282  D) 2782  E) 2729
4 --- 2800   5 --- ? =&gt; 3500   Answer:3500
<result>B</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.2800, what will be the difference between Q and R's share?