SOLUTION: What was the percent increase in the population from 1950 to 2000? 1950 - Population 426,000,000 2000 - Population 1,046,500,000

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: What was the percent increase in the population from 1950 to 2000? 1950 - Population 426,000,000 2000 - Population 1,046,500,000      Log On


   

Question 130840This question is from textbook Basic mathematical skills with geometry
: What was the percent increase in the population from 1950 to 2000?
1950 - Population 426,000,000
2000 - Population 1,046,500,000 This question is from textbook Basic mathematical skills with geometry

Answer by cngriffith(27) About Me  (Show Source):
You can put this solution on YOUR website!
Use a proportion to solve this problem:
amount of change/beginning amount=%/100.
"From 1950" means this population is the beginning amount.
The amount of change is the positive difference between the beginning amount and the ending amount(means subtract the smaller number from the larger number)
620500000/426000000=%/100 Change % to a variable
620500000/426000000=x/100
426000000x=62050000000 Cross multiply and solve for x.
x=145.66 %