What was the percent increase in the population in S.America from 1900 to 2000?
1900 = 38,000,000
1950 = 111,000,000
2000 = 515,000,000
Can someone please help guide me?? I am not great at percentages.. would I add the three and then divide by 3?
Thank you Ms. Sue
the answer I got from your help was: 85%
According to your problem, you don't need to do anything with the numbers for 1950.
First:
515,000,000 - 38,000,000 = 477,000,000
Next:
38,000,000 / 477,000,000 = ?
Multiply your answer by 100 (or move the decimal point two places to the right) to find the percent increase.
85% does not look right.
Percentage increases are calculated as
(new value-old value) / old value.
If the population of Tokyo went from 10.18 millions to 12.79 millions in 2007, the percentage increase would be:
(12.79-10.18)/10.18
=0.2564
=25.64%
As suggested by Ms Sue, do not take into account of the 1950 numbers.
So percentage increase is from 38 millions in 1900 to 515 millions in 2000, or
(515-38)/38
=12.55
=1255%
You can check the data provided at the following link:
http://www.hist.umn.edu/~rmccaa/lademotr/sld003.htm
hmmm confused now
I'm sorry, but I misstated the division problem.
As MathMate pointed out, it should be:
477,000,000 / 38,000,000 = 12.55 = 1255%
4,714,900 to 708,7000
To calculate the percent increase in population in South America from 1900 to 2000, you need to follow these steps:
1. Subtract the initial population from the final population to find the change in population. In this case, the initial population in 1900 was 38,000,000 and the final population in 2000 was 515,000,000. So, the change in population is 515,000,000 - 38,000,000 = 477,000,000.
2. Divide the change in population by the initial population and multiply by 100 to find the percent increase. In this case, the percent increase is (477,000,000 / 38,000,000) * 100 ≈ 1255.26%.
Therefore, the population in South America increased by approximately 1255.26% from 1900 to 2000.