El reloj de mauricio se atrasa 5 minutos cada 6 horas. hoy alas 7: 00 a. m el reloj de mauricio estaba marcando la hora correcta. ¿ cuando vovera a marcar la hora correcta el reloj de mauricio

It will take 72 days to be the correct time again.

We will set up a proportion for this.  The first ratio will be 5/6 (5 minutes off every 6 hours).  In order to be correct again, the clock must be off by a full 24 hours.  24 hours *60 minutes = 1440 minutes; the second ratio of the proportion is 1440/x:

5/6 = 1440/x 
5*x = 6*1440
5x=8640

Divide both sides by 5:
5x/5 = 8640/5
x=1728

It will take 1728 hours.  This is 1728/24 = 72 days.