At the water park, Beth and Amy decided to race each other down a waterslide. Amy won by .25 seconds. If Beth's time was exactly 7.8 seconds, how long did it take for Amy to down the slide?

Beth's time = 7.8 seconds

Amy = 7.8 -2.5 = ???

To find out how long it took for Amy to go down the waterslide, we can subtract the time Beth took from the total time difference between them.

Given:
- Beth's time = 7.8 seconds
- Amy won by 0.25 seconds

First, let's calculate the total time difference:

Total time difference = Beth's time - Amy's time

Total time difference = 7.8 seconds - 0.25 seconds

Total time difference = 7.55 seconds

Now, to find out Amy's time, we subtract the total time difference from Beth's time:

Amy's time = Beth's time - Total time difference

Amy's time = 7.8 seconds - 7.55 seconds

Amy's time = 0.25 seconds

Therefore, it took Amy 0.25 seconds to go down the waterslide.