Please answer the following question by reasoning step-by-step.
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?

2000
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.

.

The answer: 2000