Q. On selling 17 balls at Rs. 720, there is a loss equal to the cost price of 5 balls. The cost price of a ball is:

Option
A. Rs. 45
B. Rs. 50
C. Rs. 55
D. Rs. 60

• Let the cost price of a ball is Rs.x
  The equation is:
  17x-720=5x
  Solving the equation we get x=60
  Answer option is D
• 13 years agoHelpfull: Yes(21) No(1)
• when 17 balls sells as 720 he loss the amount of 5 balls.
  it means that the price 720 is the cost of 12 balls.
  12 balls cost =720 rps
  1 ball cost=720/12=60 rps.
• 10 years agoHelpfull: Yes(7) No(1)
• let the cost of 1 ball be= x
  then the total cost of 17 balls is = 17x
  the selling price is 720/- and the loss is equal to the cost of 5 balls i.e., 5x
  17x - 720 = 5x
  12x = 720
  x = Rs 60/-
• 7 years agoHelpfull: Yes(1) No(0)
• condition of loss is cp-sp
  
  17cp-17sp=5cp
  12cp=17sp
  cp=1020
  
  for 1 article is 1020/17= 60 rs
• 7 years agoHelpfull: Yes(0) No(0)