Ramesh works A hours a day and rests B hours a day. This pattern continues for 1 week, with an exactly opposite pattern next week, and so on for four weeks. Every fifth week he adopts a new pattern which then continues for the next four weeks. When he works longer than he rests, his wage per hour is three times what he earns per hour when he rests longer than he works. The following table shows his daily working hours for the week numbered 1 to 13.

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A week consists of six days and a month consists of four weeks. If Ramesh is paid Rs. 60 per working hour in
the 1^{st}1st week, what is his salary for the 1^{st}1st month? (Assume that he is paid half his wages for his resting hours on duty)