Step 1: Calculating the total marked price.
Total marked price = ₹ (1,450 + 2 × 850)
= ₹ (1,450 +1,700)
= ₹ 3,150
Given that, discount percentage = 10%
Discount = ₹ (10/100 x 3150)
= ₹ 315
Step 3 : Calculating the selling price.
Also, Discount = Marked price − Selling price
₹ 315 = ₹ 3150 − Selling price
∴ Selling price = ₹ (3150 − 315) = ₹ 2835
Therefore, the customer will have to pay ₹ 2,835.