$A$ trader allows a discount of $15 \%$ on a trolley bag having a list price of $Rs. 1360$ and earns a profit of $15.6 \%$. What is the cost price (in $Rs.$) of the trolley bag?

An article is marked $40 \%$ above the cost price and a discount of $30 \%$ is allowed. What is the gain or loss percentage?

$A$ shopkeeper gives two successive discounts of $7 \%$ each on the marked price of $Rs.\, 20,000$ of an article. The selling price of the article is (in $Rs.$):

$A$ has to pay $Rs. 220$ to $B$ after $1$ year. $B$ asks $A$ to pay $Rs. 110$ in cash and defers the payment of the remaining $Rs. 110$ for $2$ years. $A$ agrees to it. Counting the rate of interest at $10\%$ per annum in this new mode of payment,which of the following is true?

If $21 \%$ of an electricity bill is discounted,$Rs. 1817$ is still to be paid. How much was the original bill amount? (in $Rs.$)

When a discount of $20 \%$ is given on a sweater,the profit is $28 \% .$ If the discount is $14 \%,$ then the profit is (in $\%$)