Respostas

2014-05-29T20:40:50-03:00
500 ---- 100%
x    ----- 15%

100x = 15x500
x=7500/100
x=75

500 - 75 = 425

R: Pagou R$425,00
2014-05-29T20:42:08-03:00
500,00=100% x = 15% x.100=500,00.15 X= 7,500: 100 x= 75 500,00- 75,00 = 425, 00