Answer:

To find the marked price of the tea set, you can use the formula:

Marked Price = Selling Price / (1 - Discount Percentage)

In this case, the selling price is Rs 3,500, and the discount is 12%. First, you need to convert the discount percentage to a decimal by dividing it by 100:

Discount Percentage = 12% = 0.12 (in decimal form)

Now, you can calculate the marked price:

Marked Price = 3,500 / (1 - 0.12)

Marked Price = 3,500 / 0.88

Marked Price = 3,977.27 (rounded to the nearest rupee)

So, the marked price of the tea set is approximately Rs 3,977.