WBCS.LIVE practice question

Rs. 9,000/- were divided equally among a certain number of persons. Had there been 20 more persons, each would have got Rs. 160 less. The original number of persons

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. 20
  2. 25
  3. 30
  4. 40

Correct answer and explanation

Correct answer: 25

Explanation: āœ… Correct Answer: B. 25 šŸ“š Explanation: Let the original number of persons be x. The equation is 9000/x - 9000/(x + 20) = 160, which simplifies to 1125 / (x * (x + 20)) = 1/20. This leads to the quadratic equation x squared + 20x - 1125 = 0. Solving this gives x = 25 as the positive result, meaning there were originally 25 people.