9. Difference between shares

\(A\), \(B\) and \(C\) start a small business by investing  in the ratio \(​7​ : ​9​ : ​4​\). At the end of the year, they make a profit of \(₹​5040​\). What is the difference between \(B\)'s share and \(C\)'s share?

 

​​Ans: \(₹\)