Question 935697: what is the rate of decrease if a number decreases from 2,000 to 1,450 ?
Answer by Theo(13342)   (Show Source):
You can put this solution on YOUR website! your decrease is 2000 - 1450 = 550.
the rate of decrease is equal to 550 / 2000 = .275
the decrease is then calculated from the rate as .275 * 2000.
the rate is normally described as a function of time, like one year or two years or 10 years or 3 months or 5 days or whatever.
assuming that the time interval between when the value was 2000 and 1450 was 1 year, then the rate of decrease would be .275 per year.
if the rate of decrease was constant, then 200 would become 2000 - .275 * 2000 = 1450 after the first year and then become 1450 - .275 * 1450 = 1051.25 after the second year, etc.
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