Over the past 50 years,Brazil's population growth rate has averaged about 2.3 percent.According to the rule of 70,Brazil's population will double in about:
A)three years.
B)30 years.
C)33 years.
D)161 years.
E)1.6 years.

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The Answer of Over the past 50 years,Brazil's population growth rate has averaged about 2.3 percent.According to the rule of 70,Brazil's population will double in about:
A)three years.
B)30 years.
C)33 years.
D)161 years.
E)1.6 years.

Over the Past 50 Years,Brazil's Population Growth Rate Has Averaged