Question
A battery that lasts for 12 hours has been in use for 7 hours. What percent of the battery life has been used up?
Ask by Chen Chen. in the United States
Jan 24,2025
Real Tutor Solution
Tutor-Verified Answer
Answer
About 58.33% of the battery life has been used up after 7 hours.
Solution
To determine the percentage of battery life that has been used up, you can use the following steps:
1. **Identify the total battery life and the time used:**
- **Total Battery Life:** 12 hours
- **Time Used:** 7 hours
2. **Calculate the fraction of battery life used:**
\[
\text{Fraction Used} = \frac{\text{Time Used}}{\text{Total Battery Life}} = \frac{7}{12}
\]
3. **Convert the fraction to a percentage:**
\[
\text{Percentage Used} = \left( \frac{7}{12} \right) \times 100\% \approx 58.33\%
\]
**Conclusion:** Approximately **58.33%** of the battery life has been used up after 7 hours of use.
Reviewed and approved by the UpStudy tutoring team
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Simplify this solution The Deep Dive
To determine the percentage of the battery life that has been used up, you can use the formula: (time used / total battery life) x 100%. Here, the time used is 7 hours and the total battery life is 12 hours. So, (7 / 12) x 100% = 58.33%. Therefore, about 58.33% of the battery life has been used up. A fun way to visualize this is to think of your battery as an hourglass where each hour represents a segment of your day. When you look at it after 7 hours, more than half of your sand has slipped through to the bottom! So, next time you're monitoring your battery, just remember—keeping that hourglass full means better tech performance to help you with your day.
