Practicing Success
The population of a city increased by 30%in the first year and decreased by 15% in the next year. If the present population is 11,050 then the population 2 years ago was: |
10,000 99,500 99,000 10,050 |
10,000 |
30% = \(\frac{(3)}{10}\) , 15% = \(\frac{(3)}{20}\) Let Population two years ago = 100x 100x × \(\frac{(13)}{10}\) × \(\frac{(17)}{20}\) = 11050 So , Population two years ago = 10,000 |