Multiple choice

On selling 21 balls at Rs. 986, there is a loss equal to the cost price of 4 balls. The cost price of a ball is-

  1. Rs. 56

  2. Rs. 58

  3. Rs. 63

  4. Rs. 67
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Let cost price of each ball = x. Selling price of 21 balls = Rs. 986, so SP per ball = 986/21 = Rs. 47 (approximately). Loss = cost price of 4 balls = 4x. Total loss = 21x - 986 = 4x, so 17x = 986, thus x = 986/17 = Rs. 58. The cost price of one ball is Rs. 58. (Note: 986/21 = 46.95, which rounds to 47, and 58 × 17 = 986 exactly).

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