reducing the 10% cost of pens , ramu got 9 more pens extra for 545 rupees.
Find out the cost of each pen?

• 6.73 Rs.
  
  If cost of each pen= x
  Number of pens without reduction in price= 545/x
  Number of pens with 10% reduction= 545/(90x/100)=5450/9x
  Given, (5450/9x)= (545/x)+9
  81x= 545 ,x=545/81= 6.73
• 10 years agoHelpfull: Yes(2) No(0)
• discount=10% of 545 = 54.50
  cost of 1 pen= 54.50/9 = 6.5
  
• 10 years agoHelpfull: Yes(1) No(0)