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3 votes
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?

2 Answers

3 votes

Answer:

38.3

Explanation:

38.3

User Cortiz
by
8.6k points
1 vote

Answer:

The estimated taken to drive downtown using App is 38.4 minutes

Explanation:

Given as :

The initial time taken to drive downtown = i = 48 minutes

The percentage error of time = r = 20%

Let The estimated time using app = t min

Let the time = 1 min

Now, according to question

The estimated time using app = The initial time taken to drive downtown ×
(1-(\textrm rate)/(100))^(\textrm time)

Or, t minutes = i minutes ×
(1-(\textrm r)/(100))^(\textrm 1)

Or, t = 48 minutes ×
(1-(\textrm 20)/(100))^(\textrm 1)

Or, t = 48 minutes ×
(100-20)/(100)

Or, t = 48 minutes ×
(80)/(100)

∴ t =
(48* 80)/(100) minutes

I.e t = 38.4 minutes

Or, The estimated time using app = t = 38.4 min

Hence, The estimated taken to drive downtown using App is 38.4 minutes Answer

User Blago
by
9.0k points
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