The amount of depreciation for the first full year, during which the equipment was used for 3,000 hours, is $78,000. This is calculated using the straight-line method based on the equipment's cost, salvage value, and estimated life. Option A is correct.
To calculate the annual depreciation using the straight-line method, you can use the formula:
![\[ \text{Depreciation per year} = \frac{\text{Cost} - \text{Salvage Value}}{\text{Estimated Life}} \]](https://img.qammunity.org/2024/formulas/business/high-school/nqqp7ofp0llaabgg0k6uolilyidot06luj.png)
- Cost = $285,000
- Salvage Value = $25,000
- Estimated Life = 4 years or 10,000 hours
First, let's calculate the annual depreciation for the entire life in terms of hours:
![\[ \text{Depreciation per hour} = \frac{\text{Cost} - \text{Salvage Value}}{\text{Estimated Life in hours}} \]\[ \text{Depreciation per hour} = (285,000 - 25,000)/(10,000) \]\[ \text{Depreciation per hour} = (260,000)/(10,000) \] \text{Depreciation per hour} = \$26 \]](https://img.qammunity.org/2024/formulas/business/high-school/ypyggnn9qrh8s2rqdidv4xsylt6jbuvwdo.png)
Now, for the first full year (3,000 hours), the depreciation would be:
![\[ \text{Depreciation for the first full year} = \text{Depreciation per hour} * \text{Number of hours used} \]](https://img.qammunity.org/2024/formulas/business/high-school/tn7qiwxvpoeir8g1rpz7n9n9905lwa0dh1.png)
Depreciation for the first full year} = $26 × 3,000
Depreciation for the first full year = $78,000
Therefore, the correct answer is:
- A. $78,000.