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 = ?
  • 1Rs. 45
  • 2Rs. 50
  • 3Rs. 60
  • 4Rs. 55
Answer:- 4
Explanation:-

Solution:
According to the question,
Let cost price of 1 ball is = Rs. x
∴ Cost price - Selling price = Loss
17x - 720 = 5x
12x = 720
⇒ x = 60
∴ Cost price of 1 ball is Rs. 60

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