Provide an appropriate response.
-Use the growth rate of 1.3% to estimate the population of a growing country in 2097. Start from the 2000 population of 62 million. Use the approximate doubling time formula.
A)216.1 million
B)143.7 million
C)162.0 million
D)91.1 million

Question

Quizplus · Accepted Answer

The approximate doubling time can be calculated using the rule of 70, which states that the doubling time in years is approximately 70 divided by the growth rate. For a 1.3% growth rate, the doubling time is 70 / 1.3 ≈ 53.85 years. From 2000 to 2097 is 97 years, which is close to two doubling periods (2 * 53.85 ≈ 107.7 years). Starting with a population of 62 million, after one doubling period (approximately by 2053), the population would be 124 million. By 2097, although not a full second doubling period, the population would be approaching its second doubling, suggesting a figure closer to the next doubling point than the first, making 216.1 million (A) the most reasonable estimate given the options.

Provide an Appropriate Response