The population of Bumpton increased by 10% from 1980 to 1990 and decreased by 10% from 1990 to 2000 what is the net percent change in the population on Bumpton from 1980 to 2000 ?
Lets say it started at 100. In ten years, it was 110. In another ten years, it was 121. Now deduct ten percent, or 121-12.1
To find the net percent change in the population of Bumpton from 1980 to 2000, we'll need to calculate the cumulative effect of the individual percentage changes from 1980 to 1990 and from 1990 to 2000.
Let's start by calculating the population change from 1980 to 1990. We know that the population increased by 10% during this period. To calculate the new population in 1990, we can multiply the population in 1980 by 1.10 (which represents a 10% increase):
New population in 1990 = Population in 1980 * (1 + 0.10)
Next, let's calculate the population change from 1990 to 2000. We know that the population decreased by 10% during this period. We can calculate the new population in 2000 by multiplying the population in 1990 by 0.90 (which represents a 10% decrease):
New population in 2000 = Population in 1990 * (1 - 0.10)
Finally, to calculate the net percent change from 1980 to 2000, we need to find the difference between the population in 2000 and the population in 1980, and then express it as a percentage of the population in 1980.
Net percent change = ((New population in 2000 - Population in 1980) / Population in 1980) * 100
By substituting the respective values we calculated earlier, we can find the net percent change in the population of Bumpton from 1980 to 2000.