A sells an article to $B$ at a gain of $20 \%$ and $B$ sells it to $C$ at a gain of $10 \%$ and $C$ sells it to $D$ at a gain of $12 \frac{1}{2} \% .$ If $D$ pays $Rs.\, 29.70,$ then $A$ purchased the article for (in $Rs.$)
$40$
$10$
$20$
$30$
If Aditya sells an article to Nutan at $10 \%$ gain, while Nutan sells it to Manish at $20 \%$ gain at $Rs.\, 1914$ then what is the Cost Price in $Rs.$?
By selling an article for $Rs.\, 450,$ a man loses $10 \% .$ The gain or loss percent if he sells it for $Rs.\, 540$ is
A fan costing $Rs. 1200$ is being sold for $Rs. 1500$. What is the profit percent?
Selling price of a glass is $Rs.\, 1965$ and loss per cent is $25 \%$. If selling price is $Rs.\,3013,$ then what will be the profit percent?
On selling $17$ balls at $Rs.\, 720$, there is a loss equal to the cost price of 5 balls. The cost price of a ball is (in $Rs.$)