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 Fleming Evans. in the United States
Jan 24,2025
Real Tutor Solution
Tutor-Verified Answer
Answer
58.33% of the battery life has been used up.
Solution
To find the percentage of the battery life that has been used up, we can use the formula:
\[ \text{Percentage used} = \left( \frac{\text{Hours used}}{\text{Total battery life}} \right) \times 100\% \]
Given that the battery lasts for 12 hours and has been in use for 7 hours, we can substitute these values into the formula to find the percentage of the battery life that has been used up.
Calculate the value by following steps:
- step0: Calculate:
\(\frac{7}{12}\times 100\)
- step1: Reduce the numbers:
\(\frac{7}{3}\times 25\)
- step2: Multiply:
\(\frac{7\times 25}{3}\)
- step3: Multiply:
\(\frac{175}{3}\)
The percentage of the battery life that has been used up is \(58\frac{1}{3}\%\) or approximately 58.33%.
Reviewed and approved by the UpStudy tutoring team
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Simplify this solution Extra Insights
You've used approximately 58.33% of the battery life! To find this, you take the time used (7 hours) and divide it by the total battery life (12 hours), then multiply by 100. So, (7/12) * 100 = 58.33%. This simple calculation can be handy for everyday tasks like managing your phone or laptop battery. Keeping track of battery life helps you plan your activities—so you won’t be caught off guard when your device shuts down unexpectedly!
