A trader sells rice at a profit of $5 \%$ and uses a weight which is $25 \%$ less. Find the total percentage gain.
$20$
$30$
$40$
$50$
A shopkeeper sold an article offering a discount of $5 \%$ and earned a profit of $23.5 \% .$ What would have been the percentage of profit earned if no discount was offered?
Rajesh sells taperecorder to Mihir at a loss of $10 \%$ and Mihir sells it to Shiv at a loss of $20 \%$. If Shiv pays $Rs.\,1440$ for it, at what price did Rajesh buy? (in $Rs.$)
A vendor started selling vegetables at $Rs. 10$ per $k g,$ but couldn't find buyers at this rate. So, he reduced the price to $8.10 / kg ,$ but uses a faulty weight of $900\, g$ for $1\, kg .$ Find the percent change in the actual price or loss.
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......$\%$
If the cost price of $12$ pens is equal to selling price of $8$ pens, find the gain percent.