The population of a town is 72,800. It grows by 5% every year. What will the population be after 2 years?

💡 Solution & Explanation

Each year's growth is on the new population. After 1 year: 72,800 × 105/100 = 76,440. After 2 years: 76,440 × 105/100 = 80,262. Adding 10% of the original once gives 80,080, which forgets the growth on the first year's increase.