Respostas

2014-07-16T01:19:50-03:00
380⇒100%
136,8⇒x%
380x=13680
x=13680/380 x=36%

2014-07-16T02:21:18-03:00
380-100% assim como 136,8-x%. 136,8x100/ 380= 36%