Question

It took 48 minutes to drive downtown An app estimated it would be less than that If the error was 20% what was the apps estimate

Answer 1

Answer:

The app's estimate was 38.4 minutes.

Step-by-step explanation:

Suppose, the app's estimated time was $t$ minutes.

Given that, it took 48 minutes to drive downtown. So, the error in estimated time by the app $=(48-t)$ minutes.

It is also given that the error was 20%. So, the amount of error $= (48*0.20)=9.6$ minutes.

Thus, the equation will be......

$48-t= 9.6\\ \\ -t=9.6-48\\ \\ -t=-38.4\\ \\ t= 38.4$

So, the app's estimate was 38.4 minutes.