If the population of Romania was about 22.5 million in 2000 and the average population growth rate is 0.5 percent,then Romania's "initial" population was about __________ in 1960.
A)23.6 million
B)22.5 million
C)18.4 million
D)21.4 million
E)15.8 million

Question

Quizplus · Accepted Answer

To find the initial population in 1960, we use the formula for exponential growth: P = P0 * (1 + r)^t. Here, P is the population in 2000 (22.5 million), r is the growth rate (0.5% or 0.005), and t is the time in years (40 years from 1960 to 2000). Solving for P0 gives approximately 18.4 million.

If the Population of Romania Was About 22