The marked price of an article = ₹9000 and rate of GST on it is 18%. A shopkeeper buys this article at a reduced price and sells it at its marked price.
If the shopkeeper pays ₹162 as CGST to the government as part of his net tax liability, find the amount (excluding GST) paid (in ₹) by the shopkeeper for the article.
⇒18100×9000−18x100=324
⇒1620−18x100=324
⇒ 18x100 = ₹ 1620 - ₹324
⇒ 18x100 = ₹1296
⇒ x = ₹7200
So, for the shopkeeper, the cost price of the article is ₹7200.