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Two farmers Ramkishan and Gurcharan Sing...

Two farmers Ramkishan and Gurcharan Singh cultivates only three varieties of rice namely Basmati, Permal and Naura. The sale (in Rupees) of these varieties of rice by both the farmers in the month of September and October are given by the following matrices A and B.
`A=overset("Septermber Sales (in Rupees)")overset("Basmati Permal Naura")([("10,000","20,000","30,000"),("50,000","30,000","10,000")]){:("Ramkishan"),("Gurcharan Singh"):}`
`B=overset("October Sales (in Rupees)")overset("Basmati Permal Naura")([("5,000","10,000","6000"),("20,000","10,000","10,000")]){:("Ramkishan"),("Gurcharan Singh"):}`
(i) Find the combined sales in September and October for each farmer in each variety.
(ii) Find the decrease in sales from September to October.
(iii) If both farmers receive 2% profit on gross sales, compute the profit for each farmer and for each variety sold in October.

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