πŸ“’ Too many exams? Don’t know which one suits you best? Book Your Free Expert πŸ‘‰ call Now!

  • google app store apple app store
  • βœ–

      Question

      The population of a town increases by 20% per annum. If

      the population after 2 years is 43,200, find its present population.
      A 25028 Correct Answer Incorrect Answer
      B 23320 Correct Answer Incorrect Answer
      C 12530 Correct Answer Incorrect Answer
      D 30000 Correct Answer Incorrect Answer

      Solution

      ATQ,

      Let, the present population be β€˜x’.

      ATQ,

      So, the population after 2 years = 1.20 Γ— 1.20 Γ— x = 43200

      Or, x = 43200 Γ— (1/1.20) Γ— (1/1.20)

      So, x = 30,000

      Therefore, present population of the town = x = 30,000

      Practice Next
      ask-question