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Lalit marks up his goods by 40% and gives a discount of 10%. Apart from this, he uses a faulty balance also, which reads 1000 gm for 800 gm…

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Lalit marks up his goods by 40% and gives a discount of 10%. Apart from this, he uses a faulty balance also, which reads 1000 gm for 800 gm. What is his net profit percentage if customer buys 1 kg from lalit?
  • A59.7%
  • B57.5%
  • C67.9%
  • D64.2%
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Discussion 1

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CCommunity
Let us assume his CP/kg = Rs. 100

⇒ His SP/kg = Rs. 126

⇒ His Actual CP/kg = Rs. 80 (? he uses faulty balance)

⇒ Profit = Rs. 46

⇒ profit percentage = 46/80 x 100 = 57.5%

∴ Profit percentage is 57.5%