Answer:
48.5 gallons of water in the fish tank after 12 minutes.
Explanation:
We can start by finding the rate at which water is flowing into the tank. If 2.5 gallons of water flows from the house each minute, then the rate of water flowing into the tank is also 2.5 gallons per minute.
To find how many gallons of water are in the tank after 12 minutes, we can multiply the rate at which water is flowing into the tank by the number of minutes:
2.5 gallons/minute * 12 minutes = 30 gallons
Therefore, after 12 minutes, there will be a total of:
18.5 gallons (original amount) + 30 gallons (newly added amount) = 48.5 gallons
So there will be 48.5 gallons of water in the fish tank after 12 minutes.