Discussion
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:
Answer: D
(Cost price of \(17 balls\)) - (Selling Price of \(17 balls\)) \(=\) (Cost Price of \(5balls\))
\(\Rightarrow\) Cost Price of \(12 balls\) = Selling Price of \(17 balls \) = \(Rs. 720.\)
\(\Rightarrow\) Cost Price of \(1 balls\) = \(Rs. (\frac{720}{12}) = Rs. 60.\)
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