You're asking for the rate of 2550 gallons over 30 days. To find a rate, we need to know what the unit of measurement is. Here's how we can approach this:

Assuming Gallons per Day

* Rate = Total Gallons / Number of Days

* Rate = 2550 gallons / 30 days

* Rate = 85 gallons per day

Other Possible Units

If you have a different unit in mind, please let me know! For example, you might want:

* Gallons per hour: We'd need to know how many hours are in those 30 days.

* Gallons per minute: We'd need to know how many minutes are in those 30 days.

Let me know if you have a specific unit in mind, and I can calculate the rate for you.