A census showed that from 1990 to 2000, a country's population increased by 25.325.3%. The country reported its population in 2000 to be 15 comma 922 comma 54315,922,543. What was the country's population in 1990?
+23246 Let x represent the county's population in 1990.
In the year 2000, the county's population was 15,922,543.
This represents an increase of 25.325.3%.
To find the original population:
add the original population to the increase in population to get the final population
- the original population = x
- the increase in population is 25.325.3% · x = 0.253253 · x
- the final population is 15,922,543
x + 0.253253·x = 15,922.543
1.253253·x = 15,922.543
x = 15,922.543 / 1.253253
x = 12,704,971
