How many BTUs would be removed in a 30-ton system per hour?

To determine how many BTUs are removed in a 30-ton cooling system per hour, it's essential to understand the relationship between tons of cooling and BTUs. One ton of cooling capacity is equivalent to the ability to remove 12,000 BTUs per hour.

For a system rated at 30 tons, we need to multiply the tonnage by the BTU equivalent of one ton:

30 tons × 12,000 BTUs/ton = 360,000 BTUs/hour.

This calculation shows that a 30-ton system would remove 360,000 BTUs in one hour, making this answer the correct choice.

The other values presented do not correspond to the calculation based on standard ton-to-BTU conversion and therefore do not accurately represent the cooling capacity of a 30-ton system.