Under the Straight-Line Method (SLM), depreciation is calculated as:
Depreciation = Cost × Rate × Time
Given: Cost = Rs. 8,00,000, Rate = 15%, Time = 7 months (September to March):
Depreciation = 8,00,000 × \(\frac{15}{100}\) × \(\frac{7}{12}\)
Depreciation = 8,00,000 × 0.0875 = Rs. 70,000