The cost of Joe's new HVAC system is $20,000. It includes 2 conditioning zones, each with 5 vents. In dollars, what is the cost of the system per vent? Think carefully first, then make a decision:
Two zones with 5 vents per zone is 2 * 5 = 10 vents. Thus, the $20,000 system costs $20,000 / 10 = $2,000 per vent. So, the answer is 2000.