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The population of a town is 15000. It increases by 10 percent in the first year and 20 percent in the second year. But in the third year it decreases by 10 percent. What will be the population after 3 years.
  • a)
    16820
  • b)
    15820
  • c)
    17820
  • d)
    19820
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
The population of a town is 15000. It increases by 10 percent in the f...
15000*(11/10)*(12/10)*(9/10) = 17820
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Most Upvoted Answer
The population of a town is 15000. It increases by 10 percent in the f...
Population Calculation:
- Population at the end of the first year = 15000 + 10% of 15000
- Population at the end of the first year = 15000 + 0.10 * 15000
- Population at the end of the first year = 15000 + 1500
- Population at the end of the first year = 16500
- Population at the end of the second year = 16500 + 20% of 16500
- Population at the end of the second year = 16500 + 0.20 * 16500
- Population at the end of the second year = 16500 + 3300
- Population at the end of the second year = 19800
- Population at the end of the third year = 19800 - 10% of 19800
- Population at the end of the third year = 19800 - 0.10 * 19800
- Population at the end of the third year = 19800 - 1980
- Population at the end of the third year = 17820
Therefore, the population after 3 years will be 17820. So, the correct answer is option 'C'.
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The population of a town is 15000. It increases by 10 percent in the first year and 20 percent in the second year. But in the third year it decreases by 10 percent. What will be the population after 3 years.a)16820b)15820c)17820d)19820Correct answer is option 'C'. Can you explain this answer?
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