A trader marked his goods at 20% above the cost price. He sold half of the stock at the marked price, one quarter at a discount 20% on the marked price and rest at a discount 40% on the marked price. Determine his overall profit? (in terms of percentage)

• ans) 2% profit
  let the cp of 1 item be 100
  then mp of 1 item = 120
  let there be 100 goods then total cp = 10000
  according to question
  he sells 50 goods at 120 = 6000
  he sells 25 goods at 96 = 2400 and
  he sells 25 goods at 72 = 1800
  hence total sp =10200
  profit = sp-cp=200
  profit % =(profit/cp)*100
  (200/10000)*100= 2%
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