Answer:
f(t)/g(t) represents the average cost of producing a unit of commodity between the time frame 0-t.
Step-by-step explanation:
f(t) is cost in dollar while g(t) is in unit. f(t)/g(t) will be cost per unit.
In other words f(t)/g(t) is the total cost spent in time t divided by the amount of commodity produced in units produced in time t.