Respostas

2014-07-21T21:21:30-03:00
350-10=340 ...78% de desconto de 340

340------100
x--------78

100x=26,520
x=26,520/100
x=265,20

78%=265,20

D= 265,20-340
D=74,80
2014-07-21T21:35:32-03:00