When a book is sold at its Marked Price it gives a profit of $40 \% .$ What $\%$ will happen if it is sold at half the marked Price?
$30 \%$ profit
$25 \%$ loss
$30 \%$ loss
$40 \%$ profit
Sanjay purchased a chair marked at $Rs.\, 800$ at $2$ successive discount of $10 \%$ and $15 \%$ respectively. He spent $Rs.\, 28$ on transportation and sold the chair for $Rs.$ $800 .$ How much is his gain percentage?
A trader buys $500\, kg$ of cotton for $Rs.\, 9,000.10 \%$ of this cotton is spoiled due to rain. At what rate ($Rs./ kg$) should he sell the rest to earn $10 \%$ profit?
Hundred oranges are bought at the rate of $Rs.\, 350$ and sold at the rate of $Rs.\, 48$ per dozen. The percentage of profit or loss is
A man bought $4$ dozen eggs at $Rs.\, 24$ per dozen and $2$ dozen eggs at $Rs.\, 32$ per dozen. To gain $20\%$ on the whole, he should sell the eggs at in $Rs.$ per dozen
If selling price is doubled, profit triples. Find the profit percent.