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From 1980 through 1990, the population of Country X increased by 100 percent. From 1990 to 2000, The population increased by 50 percent. What was the combined increase for the period 1980-2000

A150%
B166 2/3%

C.175%

D.200%

Verified Answer :

johnkellock

D. 200%
In 1990 the value of population is 200% (100% + 100%), therefore the 50% increase is 100%, meaning the total is 200%

Answer:200 %

Step-by-step explanation:

From 1980 to 1990 population increased by 100%

Let us Say initial population be x

therefore 100 % increase means it increases to 2x

From 1990 to 2000 population increased by 50%

i.e.\(2x \times 1.5=3x\)

Total increase from 1980 to 2000

\(\frac{3x-x}{x}\times 100=200\%\)

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