420,046 views
35 votes
35 votes
After each charging, a battery is able to hold only 99% of the charge from the previous charging. The battery was used for 15 hours on its first charge before it had to be recharged. What is the total number of hours the battery can be used over its lifetime?

User Cocquemas
by
3.1k points

1 Answer

10 votes
10 votes

Answer: 13.5 hours or 14 hours (if you round it)

Explanation:


(0.90)/(1.00) * 15

=13.5

User John Zeringue
by
3.4k points