According to the rule of 70,if a nation grows at a rate of 1 percent per year,in roughly how many years will national income double?

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Quizplus · Accepted Answer

According to the rule of 70, to approximate the number of years it takes for a variable to double, divide 70 by the growth rate. In this case, 70 divided by 1 equals 70 years, so it would take approximately 70 years for national income to double at a growth rate of 1 percent per year.

According to the Rule of 70,if a Nation Grows at a Rate