MathDB

The battery life on a computer decreases at a rate proportional to the display brightness. Austin starts off his day with both his battery life and brightness at

100\%

. Whenever his battery life (expressed as a percentage) reaches a multiple of

25

, he also decreases the brightness of his display to that multiple of

25

. If left at

100\%

brightness, the computer runs out of battery in

1

hour. Compute the amount of time, in minutes, it takes for Austin’s computer to reach

0\%

battery using his modified scheme.

Problem Statement