If the selling price of an article is (5/4) of its cost price, then find the profit/loss percent.
A)33.33% gain B)12.5% loss C)25% gain D)6.25% loss

• Given, SP=(5/4)CP
  SP/CP = 5/4
  So, SP=5 & CP=4
  : PROFIT%= (SP-CP)/CP×(100)
  = (5-4)/4×(100)
  = (1/4)×100
  = 25% gain (ans)
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• s.p->5/4 c.p
  s.p/c.p=5/4
  =1/4*100
  =25%gain
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• answer is (C) 25% gain
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• Let CP=100,
  SP=5/4*CP
  SP=5/4*200,
  SP=125,
  profit=SP-CP
  =125-100
  profit=25
  profit%=(profit/CP)*100
  profit%=(25/100)*100
  =25% (gain)
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• let c.p=x
  s.p=5x/4
  profit = s.p-c.p= x/4
  profit % = (profit/c.p)*100
  = (x/4/x)*100=25% gain
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