Answer:
What does 1.6 tell us?
1.6 is the quotient of 8/5. In other words, it is the ratio between the number of gallons and the time. 1.6 gallons/min means that for each 1 minute, 1.6 gallons will be filled.
What does 0.625 tell us?
0.625 is the quotient of 5/8. In other words, it is the ratio between the required time and the number of gallons filled in this time. 0.625 min/gallons means that it is required 0.625 mins to fill one gallon.