The selling price of a chair is $Rs. 1386$. If the loss percentage is $23\%$,what is the cost price (in $Rs.$) of the chair?

$A$ shopkeeper buys $144$ items at $90$ paisa each. On the way,$20$ items are broken. He sells the remainder at $₹ 1.20$ each. His gain percent,correct to one place of decimal,is:

$A$ shopkeeper allows $23 \%$ commission on his advertised price and still makes a profit of $10 \%$. If he gains $₹ 56$ on one item,what is the advertised price of the item in $₹$?

After selling $5 \%$ of a quantity of sugar,$5 \text{ kg}$ of sugar remains. Find the total quantity of sugar in $\text{kg}$.

If the selling price is tripled and the cost price is doubled,the profit would become $65 \%$. What is the present profit (in $\%$)?

Aman buys $5$ laptops and $7$ computers for $Rs. 58500$. He sells the laptops at a profit of $10\%$ and computers at a profit of $16\%$ and his total gain is $Rs. 7110$. What price does he pay for a laptop? (in $Rs.$)