UPSC Civil Services 2020 Prelims General Studies Paper II

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Question : 47 of 80
 
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A shop owner offers the following discount options on an article to a customer:
1. Successive discounts of 10% and 20%, and then pay a service tax of 10%
2. Successive discounts of 20% and 10%, and then pay a service tax of 10%
3. Pay a service tax of 10% first, then successive discounts of 20% and 10%
Which one of the following is correct?
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