Respuestas

2013-05-31T00:35:49+02:00
1- 3*60 / 4 = 180 / 4 = 45
2- 5*300 / 8 = 1500 / 8 = 187.5
3- 5*5400 / 8 = 27000 / 8 = 3375
4- 7*450 / 12 = 3150 / 12 = 262.5