Assuming a country's economy maintains an 8% rate of growth, young adults starting at age 20 would see the average standard of living in their country more than double by the time they had reached age

The formula for exponential growth rate is:

A = Ao e^(k t)

where A is the final standard of living, Ao is the initial, k is the growth rate constant in decimal = 0.08, t is time elapsed

So we will find t at A/Ao = 2

A/Ao = e^(k t)

2 = e^( 0.08 t)

t = 8.66 ~ since more than therefore 9

So by the time they reached age 29

b, fewer problems later! good luck

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