Answer:
2.4 gallons every minute
Explanation:
Since we are given three values and one variable that needs to be solved in a ratio problem we can use the Rule of Three to solve for the flow rate of the water with this being represented as x.
4
or 4.5 gallons <============> 1
or 1.875 minute
x gallons <==============> 1 minute
(1 * 4.5) / 1.875 = x
2.4 gallons = x
Therefore, we can see that the flow rate is 2.4 gallons every minute, meaning that every single minute that the hose is on, it will deposit 2.4 gallons of water into the fish tank.