A dishonest merchant professes to sell his goods at cost price, but uses a weight of 900 grams for one kg. weight. What is his profit per cent?

• let 1 g = Rs 1
  cost price:
  900g = Rs 900
  selling price:
  900g = Rs 1000
  profit=Rs(1000-900)=Rs 100
  p%=100/900*100=11.11% Ans
  
  
• 11 years agoHelpfull: Yes(1) No(0)
• Assume 1gm costs 1 rupee. The merchant gives 900 grams charging the price of 1000 grams.
  His gain is 100 grams on every 900 grams. i.e., for Rs.900 investment his gain is Rs.100.
  Therefore, Profit percent = 100900×100=1119%
• 11 years agoHelpfull: Yes(0) No(0)