Cost of Electricity to deposit 16 grams of Oxygen is Rs 200. Cost of Electricity to deposit 23 grams of sodium will be

16 grams of Oxygen =Rs 200 ; 8 gram of Oxygen =GEW,  which requires one Faraday; Thus cost of  1F=Rs 100; GEW of 'Na' = 23 g; 23 g require Rs 100 23 g    require  X; X=Rs 100