$A, B, C$ are partners in a business. During a particular $year,$ A received one third of the profit, $B$ received $\frac{1}{4}$ of the profit and $C$ received the remaining $Rs.\, 5000$ How much amount of money did A receive? (in $Rs.$)

The ratio between selling price and cost price of an article is $7: 5 .$ What is the ratio between the profit and the cost price of that article?

A trader buys two articles for $Rs.\, 4000$ each. While selling if he gains $12.5 \%$ on one and loses $20 \%$ on the other, then what will be the overall loss percent?

Nitin bought some oranges at $Rs.\, 40$ a dozen and an equal number at $\,30$ a dozen. He sold them at $Rs.\,45$ a dozen and made a profit of $\,480.$ The number of oranges, he bought, was

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 $30 \% ?$

An article is sold for $Rs.\,4950$ at a gain of $10 \% .$ What would have been the gain or loss per cent if it had been sold for $Rs$ $4275 ?$