A trader allows a discount of 10% on the marked price of an article and thus gains 17% on the cost price of the article .If the cost price is increased by 10 % ,how much discount percent should be allowed on the marked price so as to earn the same percentage of profit.

• 1%
  
  Let the initial CP=100, then SP=117% of CP = 117 and MP=117*100/90=130
  When new CP=110, SP=117% of CP = 110*117/100=128.7
  Hence % discount on MP = [(130 - 128.7)/130]*100=1%
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