A battery that lasts for 12 hours
has been in use for 7 hours. What
percent of the battery life has been
used up?

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?

UpStudy AI · Accepted Answer

To determine the percentage of the battery life that has been used up, you can use the following formula:

$$
\text{Percentage Used} = \left( \frac{\text{Time Used}}{\text{Total Battery Life}} \right) \times 100\%
$$

**Given:**
- **Time Used:** 7 hours
- **Total Battery Life:** 12 hours

**Calculation:**

$$
\text{Percentage Used} = \left( \frac{7 \text{ hours}}{12 \text{ hours}} \right) \times 100\%
$$

$$
\text{Percentage Used} = \left( 0.5833 \right) \times 100\%
$$

$$
\text{Percentage Used} = 58.33\%
$$

**Conclusion:**
After 7 hours of use, **58.33%** of the battery life has been used up.
58.33% of the battery life has been used up.

Upstudy AI Solution