the sale price of an article including the sales tax is rs. 616. the rate of sales tax is 10%. if the shopkeeper has made a profit of 12%, then the cost price of the article is:

rs. 600

rs. 515

rs. 500

rs. 550

the sale price of an article including the sales tax is rs. 616. the rate of sales tax is 10%. if the shopkeeper has made a profit of 12%, then the cost price of the article is:

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