Answer : Explanation : From given data,(C.P. of 17 balls) - (S.P. of 17 balls) = (C.P. of 5 balls)C.P. of 12 balls = S.P. of 17 balls = Rs.720.Hence, C.P. of 1 ball = Rs.720/12 = Rs. 60.

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On selling 17 balls at Rs.720 there is a loss equal to the cost price of 5 balls. Then what is the cost price of a ball is ?

Answer : Explanation : From given data,(C.P. of 17 balls) - (S.P. of 17 balls) = (C.P. of 5 balls)C.P. of 12 balls = S.P. of 17 balls = Rs.720.Hence, C.P. of 1 ball = Rs.720/12 = Rs. 60.

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