Answer:
a. $56.00
Depreciation charges = $7/50 × 400 = $56.00
Explanation:
Depreciation rate R = (initial value - scrap value)/useful life
Depreciation rate R = (70-0)/500 = $7/50 per hour
For the first 400 hours, the depreciation charges is;
Depreciation charges = depreciation rate × time
Depreciation charges = $7/50 × 400 = $56.00
Depreciation charges = $56.00