Total marked price = Rs (1,450 + 2 × 850) = Rs (1,450 +1,700) = Rs 3,150
Given that, discount % = 10%
Discount = Rs ( 10/100 x 3150 ) = Rs 315
Also, Discount = Marked price − Sale price
Rs 315 = Rs 3150 − Sale price
∴ Sale price = Rs (3150 − 315) = Rs 2835
Thus, the customer will have to pay Rs 2,835.