Ratio of earnings of A and B is 8 : 9 respectively. If the earnings of A increase by 50%and the earnings of B decrease by 25%, the new ratio of their earnings becomes 16 : 9 respectively. What are A's earnings?

• A. s. 22000
• B. s. 28500
• C. s. 37000
• D. annot be determine
• E. one of these