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 _____?

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 _____?

Explanation

Loss = Cost price of 5 balls

Loss = 720 - (Selling price of 17 balls)

Loss = Cost price of 17 balls - Selling price of 17 balls

Cost price of 17 balls = Selling price of 17 balls + Loss

= 720 + (Cost price of 5 balls)

Cost price of 1 ball = 60