58 (` lakhs) Note 20 Cost of materials consumed 2020-21 2019-20 Raw materials and packing materials consumed Stocks at beginning of the year 514.23 531.88 Add: Purchases 4,516.43 3,861.58 5,030.66 4,393.46 Less: Stocks at end of the year 830.54 514.22 4,200.12 3,879.24 (` lakhs) Note 21 Changes in inventories of finished goods and stock-in-trade 2020-21 2019-20 Stocks at end of the year Finished goods 278.53 281.12 Stock-in-trade 93.09 98.37 371.62 379.49 Less: Stocks at beginning of the year Finished goods 281.12 386.52 Stock-in-trade 98.37 77.42 379.49 463.94 (Increase) | Decrease in stocks 7.87 84.45 (` lakhs) Note 22 Employee benefit expenses 2020-21 2019-20 Salaries, wages and bonus 507.77 513.09 Contribution to provident and other funds (refer Note 25.5) 21.29 29.01 Staff welfare expenses 34.57 67.93 563.63 610.03 (` lakhs) Note 23 Finance costs 2020-21 2019-20 Interest on income tax - 0.13 Interest on finance lease obligation 7.66 7.20 Interest on micro, small and medium enterprises 2.19 0.00 Interest on security deposits 5.30 3.82 15.15 11.15
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