Respostas

2014-08-05T15:06:34-03:00
320______________100%
 x  _____________2,3%

100x=736
x=736/100
x=7,36 
2014-08-05T15:14:53-03:00
Podemos utilizar  o numero decimal correspondente:

2,3/100x320=0,023x320=7,36