Multiple choice

The population of a city is increased by 18% per year. If population of the city in 2005 was 3.6 lakhs, what was its population in 2007?

  1. 510286

  2. 501264

  3. 520130

  4. 502175

  5. None of these

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Population grows 18% annually. In 2006: 3.6 × 1.18 = 4.248 lakhs. In 2007: 4.248 × 1.18 = 5.01264 lakhs. Converting to actual number: 5.01264 × 100000 = 501264. Compound interest formula applies here.