XERCENTS - FirstAmount-= = = E55555555F E55555555F...

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When finding percent increase you take the difference between the second amount and the first (original) amount and then divide your result by the first (original) amount. A quick easy example is to find the percent increase from 10 to 15. The procedure is to take the difference in the second amount (15) and the first amount (10); so 15 – 10 = 5. Then take the result (5) and divide it by the first amount (10). That is, 5/10 = 0.50 = 50%. So the percent increase is 50%. PAGE 607 Check Yourself 2 (a) To the nearest percent, what was the increase in the population of Africa between 1950 and 2000? According to the table, the population in 1950 was 229,000,000 (first amount) and the population in 2000 was 889,000,000 (second amount). 889,000,000 229,000,000 660,000,000 660,000,000 2.88 288% 229,000,000 SecondAmount FirstAmount
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Unformatted text preview: FirstAmount-= = = E55555555F E55555555F E55555555F (b) Did the world population increase by a greater percent between 1900 and 1950 or between 1950 and 2000? The greater increase was between 1950 and 2000. From the table we get, 1900 – World Population – 1,600,000,000 1950 – World Population – 2,556,000,000 2,556,000,000 1,600,000,000 956,000,000 956,000,000 0.5975 60% 1,600,000,000 SecondAmount FirstAmount FirstAmount-= = = E5555555555F E555555555F E555555555F From the table we get, 1950 – World Population – 2,556,000,000 2000– World Population – 6,279,000,000 6,279,000,000 2,556,000,000 3,723,000,000 3,723,000,000 1.46 146% 2,556,000,000 SecondAmount FirstAmount FirstAmount-= = = E5555555555F E5555555555F E5555555555F Note: The second percent is listed incorrectly in your text....
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This note was uploaded on 01/10/2011 for the course MAT 115 68325 taught by Professor Elliot during the Spring '10 term at University of Phoenix.

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