A and B start moving from a place X and Y and Y to X, respectively, at the same time on the same day. After crossing each other, they complete their remaining journey in \(5\frac{4}{9}\) hours and X hours, respectively. If the ratio of the speeds (in km/h) of A and B is 9 : 7, then what is the value of x?

• A. \(8\frac{1}{2}\)
• B. 9
• C. 7
• D. \(7\frac{1}{2}\)