SOLUTION: If the number of white owls in Illinois has decreased from 750 to 500 in 10 years, approximate the annual rate of decrease within 3 decimals. I really struggle with the word pro

Question 601367: If the number of white owls in Illinois has decreased from 750 to 500 in 10 years, approximate the annual rate of decrease within 3 decimals.
I really struggle with the word problems, would appreciate any help. Thank you.
Answer by Edwin McCravy(20056) (Show Source): You can put this solution on YOUR website!
If the number of white owls in Illinois has decreased from 750 to 500 in 10 years, approximate the annual rate of decrease within 3 decimals.


Easy way:
A decrease of 250 in 10 years is an average of 25 in 1 year.

If that doesn't do it for you, here's some more detail:

You want to calculate the population decrease per year.

Population decrease = 750 - 500 = 250

Years = 10

(Population decrease)/year =  = 25 decrease/year

["Per" means "divided by" so "decrease per year" means decrease 
divided by years.]

Edwin

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