Question

By selling a table for Rs. 330, a trader gains 10%. Find the cost price of the table.

Answer 1

Let the C.P of the table be Rs. 100.
We have, Gain =10%=10% of Rs. 100=Rs. 10
$\therefore S.P=C.P+Gain=Rs.(100+10)=Rs.110$
Now, if the S.P is 110, then the $C.P=Rs.100$
If the S.P is Rs. 1, then the C.P $=\frac{100}{110}$
If the S.P is Rs. 330, then the C.P $=Rs.\frac{100\times 330}{110}=Rs.300$
Hence, the C.P of the table is $Rs.300.$