Step-by-step explanation:
so, 80 L can get out of the tank every minute.
how long for 4800 L ?
that simply means "how many minutes for 4800 L ?"
and this we get by dividing 4800 by 80 (to see how often 80 fits into 4800) :
4800 / 80 = 60 minutes
so, it takes 60 minutes or 1 hour to discharge 4800 L.
