Answer:
5 gallons
Explanation:
If she can do 1/10 gallon per seconds, that means she can do 5/50.
You can write it as this ratio:
1/10 = x/50.
You know that 10 * 5 = 50.
Since it is a constant ratio, it has to be 1 * 5 = x
Since 1 * 5 = 5, Tiffany can fill the pool 5 gallons per 50 seconds.