def calculate_cost(age, units): if (age > 18) and (age 2: cost = (units - 2) * 400 else: cost = 0 else: if units <

def calculate_cost(age, units): if (age > 18) and (age <= 27): if units > 2: cost = (units - 2) * 400 else: cost = 0 else: if units < 5: cost = units * 400 else: cost = (units - 4) * 200 + 300 return cost cost_returned = calculate_cost(16, 10) print(cost_returned)