Respuestas

2013-11-15T00:50:42+01:00
(320x100)/800 =40 280x100)/800=35 200x100)/800=25 :D
2013-11-15T04:57:22+01:00
Elena $320
Carmen $280
Manuel ($800-$320-$280)=$200
$800 es el 100%
$320*100/$800= 40% (Elena)
$280*100/$800= 35% (Carmen)
$200*100/$800= 25% (Manuel)