Aid falls to about 50 percent of its peak level after:
A) 6 years.
B) 12 years.
C) 18 years.
D) 24 years.

Question

Quizplus · Accepted Answer

According to the given information, aid falls to about 50 percent of its peak level after a certain number of years. Therefore, we can use the concept of exponential decay to find the time it takes for aid to reduce to half its peak level. The half-life of exponential decay is the time it takes for the quantity to reduce to half its value. In this case, the half-life can be calculated using the formula: t(half) = ln(2) / lambda, where lambda is the decay constant. Since we don't have the value of lambda, we cannot calculate the exact half-life. However, we can use the given answer choices to estimate the time it takes for aid to fall to half its peak level. Among the given options, B) 12 years seems the most reasonable as it is the midpoint between the choices and is a reasonable time period for aid to decline. Therefore, the answer is B) 12 years.

Aid Falls to About 50 Percent of Its Peak Level