Naveen sells a table at a profit of 15%. Had he bought it for 20% less and sold it for ₹220 less, he would have made a profit of 30%. The cost price of the table (in ₹) is:

Let the cost be ₹$C$, so the actual selling price is $1.15C$. In the other situation the cost is $0.80C$ and a 30% profit means a selling price of $1.30\times 0.80C=1.04C$. So $1.15C-220=1.04C$ → $0.11C=220$ → $C$ = ₹2000. (Check: CP ₹2000 and SP ₹2300; the other way CP ₹1600 and SP ₹2080, a profit of ₹480 = 30%.)