A man sells two articles for Rs.3600 each and he gains 30% on the first and loses 30% on the next. Find his total gain or loss?

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A man sells two articles for Rs.3600 each and he gains 30% on the first and loses 30% on the next. Find his total gain or loss?

A. 9% loss
B. 400
C. 4000
D. 324
Explanation:
(30*30)/100 = 9%loss