Response to the following problem:
Gambarini Corporation is a wholesaler that sells a single product. Management has provided the following cost data for two levels of monthly sales volume. The company sells the product for $197.80 per unit.
sales volume (units)............... 6,000 7,000
cost of sales........................ $486,600 $567,700
selling and administrative costs $612,6000 $624,400
The best estimate of the total monthly fixed cost ?