Given: Marked Price = 10% above the C.P Discount = 15% At the time of selling, The vendor uses 800 grams instead of 1 kg. Calculation: Let the CP of 1 kg goods be Rs. 1000 ⇒ CP of 800 gram = Rs. 800 ⇒ SP of 800 gram = 1000 × 1.1 × 0.85 ⇒ Rs. 935 Now, Percentage profit =
[935–800]
800
⇒ 16.875% ∴ The percentage profit earned by the vendor is 16.875%.