A shopkeeper purchased a chair marked at $RS.\, 600$ at two successive discounts of $15 \%$ and $20 \% .$ He spent $Rs.\, 28$ on transportation and sold the chair for $Rs.\,545.$ His gain percent was
$25$
$30$
$35$
$20$
The marked price of a watch was $Rs.\, 720 .$ A man bought the same for $Rs.\, 550.80$ after getting two successive discounts, the first being $10 \% .$ What was the second discount rate? (in $\%$)
A man sold his two cars for $Rs.$ $4.5$ $lakh$ each. In the sale of first car, he incurred $20 \%$ profit and in the sale of the second, he incurred $20 \%$ loss. The total amount of profit or loss is?
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 $Rs$ $4275 ?$
If selling price is doubled, profit triples. Find the profit percent.
If on selling $12$ note books, a seller makes a profit equal to selling price of $4$ notebooks. What is his percent profit?