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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
  • e)
    None of these
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...
Answer – c) 17820 Explanation : 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...
Increase in first year = 10%
10% of 15000 = 1500
Population After 1 year = 15000 + 1500
= 16500

Increase in second year = 20%
20% of 16500 = 3300
Population After 2 year = 16500 + 3300
= 19800

Decrease in third year = 10%
10% of 19800 = 1980
Population After 3 year = 19800 - 1980
= 17820
So The Answer is C option
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Community Answer
The population of a town is 15000. It increases by 10 percent in the f...
Given:
- Population of the town = 15000
- Increase in population in the first year = 10%
- Increase in population in the second year = 20%
- Decrease in population in the third year = 10%

To find:
- Population after 3 years

Solution:
Year 1:
- Increase in population = 10% of 15000 = 0.1 * 15000 = 1500
- New population after the first year = 15000 + 1500 = 16500

Year 2:
- Increase in population = 20% of 16500 = 0.2 * 16500 = 3300
- New population after the second year = 16500 + 3300 = 19800

Year 3:
- Decrease in population = 10% of 19800 = 0.1 * 19800 = 1980
- New population after the third year = 19800 - 1980 = 17820

Therefore, the population of the town after 3 years is 17820.

Hence, the correct option is C) 17820.
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