A user has a virtual warehouse configured with auto-resume enabled and auto-suspend set to 10 minutes. The warehouse is initially in a suspended state. The user then performs this sequence of actions:

1. Executes a query that takes 3 minutes to run.
2. Leaves the warehouse idle for 15 minutes.
3. Returns and executes a query that takes 10 seconds to run.
4. Manually suspends the warehouse immediately after the second query finishes.

How much total billable compute time is consumed by the warehouse during this entire sequence of events?