Respostas

2013-12-05T18:22:46-02:00
S=600.(1+aumeto) =600.1,20=720
2013-12-05T18:23:40-02:00
100% = 600
  20% = x
100x = 12000
     x = 12000
           100
    x = 120

   600,00
+ 120,00
  720,00