By selling 12 notebooks the seller earns a profit equal to the selling price of 2 notebooks.what is the % profit?

• let the SP of each note book is Rs.100
  As per the given condition:
  SP(12note books)-CP(12 note books)=SP(2note books)
  Thus, SP(10 note books)=CP(12 note books)
  implies CP of 12 note books =Rs. 1000
  SP(12 note books)=Rs.1200
  Profit=Rs.200
  %profit=(200/1000)*100=20%
• 12 years agoHelpfull: Yes(4) No(0)
• let SP be s , CP be c for 1 book
  for 12 books to sell Profit=2s
  since, SP-CP=profit -> 12s-12c=2s -> 5s=6c .....(eq1)
  also, SP-CP/CP x100 = profit% -> s-c/c x 100 ->100/5=20% (from eq1)
• 12 years agoHelpfull: Yes(0) No(0)
• 2*100/12 = 16.66
• 12 years agoHelpfull: Yes(0) No(0)
• 16.67%
  Let the S.P of each be 'x'
  S.P of 2 notebooks=2x
  Profit=(2x/12x)*100=16.67
  
• 9 years agoHelpfull: Yes(0) No(0)
• As per the given condition:
  SP(12note books)-CP(12 note books)=SP(2note books)
  Cp of 12 notebook is = 12 ,,,,, Cp of 1 notebook =12/12=1
  Sp of 10 notebook =12 ,,,,,, Sp of 1 notebook = 12/10 =1.2
  profit % = [[1.2-1]/1]*100 = 20%
• 7 years agoHelpfull: Yes(0) No(0)