If the ratio of the cost price and selling price of an article is $20: 21,$ then what will be the profit percent?
$5$
$4.5$
$6$
$7.5$
Abhishek makes a profit of $Rs.\,110,$ if he sells a certain number of pens he has at the price of $Rs.\, 2.5$ per pen and incurs a loss of $Rs.$ $55,$ if he sells the same number of pens for $Rs.$ $1.75$ per pen. How many pens does Abhishek have?
Two items $A$ and $B$ are sold at a profit of $10 \%$ and $15 \%,$ respectively. If the amount of profit received is the same, then the cost price of $A$ and $B$ may be (in $Rs.$)
After selling $5 \%$ of a quantity of sugar, $5\, kg$ of sugar remains. Find the total quantity of sugar. in $kg$
A shopkeeper sold some articles at $Rs.\,35$ per piece and gained $40 \% .$ What would be the selling price of each article to earn $60 \%$ profit? (in $Rs.$)
A fan in a shop is offered at a discount of $10 \%$. It is sold during clearance sale at $6 \%$ discount over the already discounted price at $Rs.\,846.$ The original marked price of the fan is (in $Rs.$)