58 (` lakhs) Note 21 Cost of materials consumed 2019-20 2018-19 Raw materials and packing materials consumed Stocks at beginning of the year 531.88 624.60 Add: Purchases 3,861.58 4,437.92 4,393.46 5,062.52 Less: Stocks at end of the year 514.22 531.88 3,879.24 4,530.64 (` lakhs) Note 22 Changes in inventories of finished goods and stock-in-trade 2019-20 2018-19 Stocks at end of the year Finished goods 281.12 386.52 Stock-in-trade 98.37 77.42 379.49 463.94 Less: Stocks at beginning of the year Finished goods 386.52 263.06 Stock-in-trade 77.42 - 463.94 263.06 84.45 (200.88) Excise duty variation on opening | closing stocks of finished goods - - (Increase) | Decrease in stocks 84.45 (200.88) (` lakhs) Note 23 Employee benefit expenses 2019-20 2018-19 Salaries, wages and bonus 513.09 393.33 Contribution to provident and other funds (refer Note 26.5) 29.01 19.23 Staff welfare expenses 67.93 80.88 610.03 493.44 (` lakhs) Note 24 Finance costs 2019-20 2018-19 Interest on income tax 0.13 - Interest on finance lease obligation 7.20 7.97 Interest on security deposits 3.82 4.76 11.15 12.73
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