Respostas

2014-07-30T13:45:13-03:00
6 = 72
9 = x
6X = 72 * 9
6x = 648
X = 648/6
X = 108 KM

R: Esse grupo de ciclistas irá percorrer 108 km.
2014-07-30T15:33:19-03:00
 72    6      
x    9
72.9=6x
648=6x
x=648/6
x=18
72+18=90
9⇒90