If the selling price of $50$ articles is equal to the cost price of $40$ articles, then the loss or gain percent is
$20 \%$ loss
$20 \%$ gain
$25 \%$ loss
$25 \%$ gain
Aditya bought $200$ dozen orange at $Rs.\, 10$ per dozen and he spent $Rs.\, 500$ on transportation. Hesold each orange at $Rs.\, 1$ each. What was his profit or loss $\% ?$
An article is sold at a profit of $20 \%$. If both the cost price and selling price are $RS.\, 150$ less, profit would be $5 \%$ more. Find the cost price.
Articles are marked at a price which gives a profit of $25 \%$. After allowing a certain discount the profit reduces to $12\frac{1}{2} \%$. The discount percent is
The $CP$ of $19$ article is equal to the selling price of $15$ article. Gain $\%$ is?
A person incurs $5 \%$ loss by selling a watch for $Rs.\,1140 .$ At what price should the watch be sold to earn $5 \%$ profit in $Rs.$?