To order the battery brands from least amount of time to most amount of time, we first need to convert the mixed numbers to improper fractions or decimals for easier comparison.
- Eveready: 1.75 hours (which is equivalent to \( \frac{7}{4} \)).
- Energizer: 2.25 hours (which is equivalent to \( \frac{9}{4} \)).
- Duracell: 2 2/3 hours (which is \( 2 + \frac{2}{3} = \frac{8}{3} \) or approximately 2.67 hours).
- Rayovac: 2 7/12 hours (which is \( 2 + \frac{7}{12} = \frac{31}{12} \) or approximately 2.58 hours).
Now we need to find a common denominator to compare:
- \( \frac{7}{4} \) (1.75)
- \( \frac{9}{4} \) (2.25)
- \( \frac{8}{3} \approx 2.67 = \frac{32}{12} \)
- \( \frac{31}{12} \approx 2.58 \)
Now let's write these out:
- Eveready: 1.75 hours
- Rayovac: \( 2 \frac{7}{12} \) or approximately 2.58 hours
- Energizer: 2.25 hours
- Duracell: \( 2 \frac{2}{3} \) or approximately 2.67 hours
Now, the correct order from least amount of time to most amount of time is:
- Eveready
- Rayovac
- Energizer
- Duracell