Respuesta :

12,500 divide 1999, 12,500 divide 1998, etc hope this helps
Moly42
  For 1999 it would be 10625$

To calculate % decrease do, 100% - 15% = 85%
             then; 85% divide 100 = 0.85 

    0.85 * 12500 (original price) = 10625$