Respostas

2013-09-21T02:40:18-03:00
15 - 1
90 - x

90 = 15x
15x = 90
x = 90/15
x = 6 viagens
3 4 3
2013-09-21T03:35:22-03:00
1 - 15
X - 90
X= 6
NECESSITA DE 6 VIAGENS