Certainly! Let's solve the problem step-by-step:
We need to find the selling price of a telephone set with a marked price of Rs. 850 after giving a 12% discount.
1. Determine the Discount Amount:
- The discount percentage is given as 12%.
- The marked price is Rs. 850.
The formula to calculate the discount amount is:
[tex]\[
\text{Discount Amount} = \left(\frac{\text{Discount Percentage}}{100}\right) \times \text{Marked Price}
\][/tex]
Substituting the values, we get:
[tex]\[
\text{Discount Amount} = \left(\frac{12}{100}\right) \times 850
\][/tex]
[tex]\[
\text{Discount Amount} = 0.12 \times 850
\][/tex]
[tex]\[
\text{Discount Amount} = 102
\][/tex]
2. Calculate the Selling Price:
- The selling price is the marked price minus the discount amount.
The formula to calculate the selling price is:
[tex]\[
\text{Selling Price} = \text{Marked Price} - \text{Discount Amount}
\][/tex]
Substituting the values, we get:
[tex]\[
\text{Selling Price} = 850 - 102
\][/tex]
[tex]\[
\text{Selling Price} = 748
\][/tex]
Therefore, the shopkeeper will sell the telephone set at a price of Rs. 748.
From the given options, the correct choice is:
b. Rs. 748
