3. It took 48 minutes to drive downtown. An app estimated it would be less than that. If the error was 20%, what
   was the app’s estimate?

To find the app’s estimate, we first need to calculate what 20% of the actual driving time (48 minutes) is. That would be 0.20 x 48 = 9.6 minutes. Since the app estimated a time less than 48 minutes, we subtract this error from the actual time.

So, the app’s estimate was 48 - 9.6 = 38.4 minutes. It seems like the app was quite optimistic about the travel time!

Now, if the app had rounded its estimate, it could just say 38 minutes instead of 38.4 to give drivers a straightforward and user-friendly number. Understanding these forecast estimates can help us avoid being late or getting a little too overconfident when navigating.