If $5 \%$ more is gained by selling an article for $Rs.\, 350$ than by selling it for $Rs$ $340,$ the cost of the article is......$\%$
$50$
$160$
$200$
$225$
By selling an article at $\frac{2}{5}$ of the marked price, there is a loss of $25 \%$. The ratio of the marked price and the cost price of the article is
The market price of an article is $Rs.$ $100 .$ If the article is sold at a discount of $10 \%,$ then $35 \%$ profit is realised. How much loss or profit will be made if it is sold for $Rs.\, 30$ less than market price?
A man sells each of his $2$ articles for $Rs.$ $99.$ On one he gains $10 \%$ and on the other he incurred a loss of $1 \%$ in the entire transaction. What is his total gain in $\%$?
By Selling $80\, ball$ pens for $Rs.\, 140$, a retailer loses $30 \% .$ How many ball pens should he sell for $Rs.\,104$ so as to make a profit of $30 \% ?$
The marked price of a piano was $Rs.\, 15,000$. At the time of sale, there were successive discounts of $20 \%$ $10 \%$ and $10 \%$ on it. The sale price was (in $Rs.$)