Answer
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An article was purchased for rupees 1239 including GST of 18 %. Find the price of the article before GST was added.
Solution
Let the Price of the article before including GST be x
Price of article including GST =Rs. 1239
GST(Goods and Service Tax) =18% of x=(18×x)100 =0.18×x
∴ Price of article including GST= Price before GST + GST
⇒x+(0.18x)=1239
⇒1.18x=1239
∴x=12391.18=Rs. 1050
So, the price of article before GST was added =Rs. 1050
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