On selling 17 balls at Tk. 720, there is a loss equal to the cost price of 5 balls. The cost price of a ball is:
সমাধান
সঠিক উত্তর: Option D
Let, Cost price be x
Then, A/Q
17x - 720 = 5x
or, 17x - 5x = 720
or, 12x = 720
or, x = 720/12
or, x = 60