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Population of a village decreases at the rate of 12% per annum.If its population 2 years ago was 62500, find its present population.78400484006000056000

Question

Population of a village decreases at the rate of 12% per annum.

If its population 2 years ago was 62500, find its present population.

Options:

  • 78400
  • 4840060000
  • 56000
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Solution

To find the present population, we need to calculate the decrease in population over the two years.

  1. First, we need to find the population decrease for the first year. Since the population decreases at a rate of 12% per annum, we multiply the initial population by 12/100.

    So, 62500 * 12/100 = 7500

    This means the population decreased by 7500 in the first year.

  2. We subtract this decrease from the initial population to find the population at the end of the first year.

    So, 62500 - 7500 = 55000

  3. We repeat these steps for the second year. First, we find the decrease in population for the second year by multiplying the population at the end of the first year by 12/100.

    So, 55000 * 12/100 = 6600

    This means the population decreased by 6600 in the second year.

  4. We subtract this decrease from the population at the end of the first year to find the present population.

    So, 55000 - 6600 = 48400

Therefore, the present population of the village is 48400.

This problem has been solved

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