Answer:
200 hours.
Step-by-step explanation:
A small inflatable pool that holds the amount of water = 10 gallons
A tiny leak causes the change in water = -0.05 gallon
Since quantity is with negative notation that represents that quantity of the water is reducing.
Let it takes x hours to empty the pool.
Therefore, amount water leaked in x hours = 0.05x gallons
And this amount is equal to 10 gallons.
0.05x = 10
x = 
= 200 hours
Therefore, in 200 hours pool will be emptied.