A man bought $500$ metres of electronic wire at $50$ paise per metre. He sold $50 \%$ of it at a profit of $5 \%$ At what percent should he sell the remainder so as to gain $10 \%$ on the whole transaction?
$13$
$12.5$
$15$
$20$
The $CP$ of $19$ article is equal to the selling price of $15$ article. Gain $\%$ is?
Mohan buys a watch for $Rs.\,350$ and sells it for $Rs.\,392.$ Find out his percentage of profit.
A loss of $19 \%$ gets converted into a profit of $17 \%$ when the selling price is increased by $Rs.162.$ The cost price of the article is (in $Rs.$)
A man purchased $120$ reams of paper at $Rs.\, 80$ per He spend $RS.\, 280$ on transportation, paid octrol at the rate of $40$ palse per ream and paid $Rs.\, 72$ to a porter. In order to gain $8 \%$ he must sell each ream of paper for (in $Rs.$)
The market price of an article is $Rs.$ $100 .$ If the article is sold at a discount of $10 \%,$ then $35 \%$ profit is realised. How much loss or profit will be made if it is sold for $Rs.\, 30$ less than market price?