A dishonest shopkeeper sells an article at 10% profit. But he uses a false weight of 700gm in place of 1kg. Find his profit percent in the transaction.

14\(\frac{2}{7}\)% 28\(\frac{4}{7}\)% 57\(\frac{1}{7}\)% 60%

57\(\frac{1}{7}\)%

Let the price of 1000 gm = 100 Selling price of 700 gm = 100 × \(\frac{110}{100}\) = 110 Cost price of 700 gm = Rs. 70 Profit % = \(\frac{(110 - 70)}{70}\) × 100 = 57\(\frac{1}{7}\)%