A shopkeeper buys some pens. If he sells them at Rs. 13 per pen, his total loss in Rs. 150 but on selling them at Rs. 15 per pen, his total gain is Rs. 100. How many pens did he sell?

• 125 pens
  
  For price difference of Rs 2 per pen, difference in income=150+100=Rs. 250
  Let number of pens be x, then 2x=250
  => x=125
• 6 years agoHelpfull: Yes(1) No(0)
• price difference between t2 pens is 2ruoee
  income difference 150+100=250
  2x=250
  x=125
• 1 year agoHelpfull: Yes(0) No(0)