Answer:
125
Step-by-step explanation:
If it takes 25 minutes for 1/6 to be filled, then 25 minutes = 1/6 of the pool
To fill the pool then we need to find 6/6
25 x 6 = 150 so that is how much water is in the pool when it is full
150 - 25 minutes, because 1/6 is already full, means it takes 125 minutes longer.