A battery has 2500 mAh capacity. A device uses 100 mAh per hour. How long will the battery last?
Answer
25 hours
How to solve it
1
Battery capacity: 2500 mAh
2
Usage rate: 100 mAh/hour
3
Time: 2500 ÷ 100 = 25 hours
Hints
Divide capacity by usage rate