Nirmala went to a shop to buy a Titan watch. The cost of the watch was$\mathrm{Rs} 3,250 .$ The rate of sales tax is $12\%$. The shopkeeper gave her a discount such that she got the watch for only$\mathrm{Rs} 3,248$ . Find the discount given by the shopkeeper.

If the sales tax is reduced from $5\%$ to $4\%$, then what difference it will make if you purchase an item of Rs.$1000$?

Jeeva purchased an article for Rs. $2500$ and sold it at $25\%$ above cost price and paid a tax of Rs. $125$. Find the post- tax profit in rupees.

$$\begin{gathered} \left(A\right) 550 \\ \left(B\right) 625 \\ \left(C\right) 475 \\ \left(D\right) 500 \end{gathered}$$

Nikita went to the stationers and bought things worth $₹25$, out of which $30$ paise went on sales tax on taxable purchases. If the tax rate was $6\%$, then what was the cost of the tax free items?

Rajeev buys goods worth $Rs. 6,650$. He gets a rebate of $6\%$ on it. After getting the rebate, he pays sales tax $@ 10\%$. Find the amount, he has to pay for the goods.