Arithmetic Aptitudes › Percentage › Question #4543
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QWhat will the population of a town be in two years if it has a current population of 1,76,400 and grows at a rate of 5% per year, and what was the population of the town two years ago?

ID: #4543 Percentage 358 views
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  • A 100000 ✔ ✖
  • B 160000 ✔ ✖
  • C 200000 ✔ ✖
  • D 150000 ✔ ✖
Correct Answer

Explanation


Population after 2 years = 176,400 * (1 + 5/100)^2
= 176,400 * (21/20) * (21/20)
= 194,481

Population 2 years ago = 176,400 / (1 + 5/100)^2
= 176,400 * (20/21) * (20/21)
= 160,000
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