a person bought 50 pens for rs 50 each.he sold 40 of them at a loss of 5%.he wants to gain 10% on the whole.then his gain percent on the remaining pens should be?

• 70%
  
  CP of 50 pens= 50*50= Rs. 2500
  Total required SP at 10% gain= 2500*(110/100)=Rs. 2750
  SP of 40 pens at 5% loss= 40*50*(95/100)=Rs. 1900
  So remaining 10 pens pens must be sold for 2750 - 1900 =Rs. 850
  Price of each pen=850/10 = 85
  Hence required % gain=100*(85-50)/50 =70
• 7 years agoHelpfull: Yes(14) No(0)
• C.P of 50 pens = 50 X 50 = 2500
  profit= 10% so, S.P of 50 pens = 2500 X 110/100 = Rs. 2750
  In the same way, S.P of 40 pens = 40 X 50 X 95/100 = Rs. 1900
  Therefore, S.P of remaining 10 pens = ( 2750 - 1900) = Rs. 850
  Gain% = (850 - 500) X 100 = 70
  500 (C.P of 10 pen is 50X10 = Rs. 500 )
• 7 years agoHelpfull: Yes(5) No(1)
• ans= 70% is right
• 7 years agoHelpfull: Yes(5) No(0)
• Cp = 50*50 = 2500
  loss 5% = 50*40*(95/100) = 1900
  profit 10% = 50*50*(110/100) = 2750
  S.P of 10 pens = (2750-1900) = 850
  gain % = (profit*100)/CP = 70% ans.
• 6 years agoHelpfull: Yes(0) No(0)