A shopkeeper 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?
(a)61% (b)57% (c) 57.5% (d) 62.5%

• let original CP be 100.
  marked price=140,after 10% discount=(140-14)=126.
  faulty weight makes actual CP to be,80
  total profilt=126-80=46
  profit%=46/80=57.5%
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