Respostas

2014-04-04T23:07:06-03:00
R$35,00 = 100%
R$15,00 = x
x=42,85%
portanto houve um aumento de 42,85%.
2014-04-04T23:10:34-03:00
50/35 = 1,428
1,428 - 1 = 0,428
0,428 * 100 = 42,8 %