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ILLUSTRATION 1 An invoice in respect of a consignment of chemicals A and B provides the following information: Chemical A: 10,000 kgs. at 10 per kg. 1,00,000 Chemical B: 8,000 kgs.at 13 per kg. 1,04,000 Basic custom duty @ 10% (Credit is not 20,400 allowed) Railway freight 3,840 Total cost 2,28,240 A shortage of 500 kgs. in chemical A and 320 kgs. in chemical B is noticed due to normal breakages. You are required to COMPUTE the rate per kg. of each chemical, assuming a provision of 2% for further deterioration