Question

The population of a certain town doubles every 24 years. If the population of the town was 8,000 in the year 2000, in what year will the population be 128,000?

Answer 1

Well, if it doubles every 24 years, 128 = 2^7, and 8 = 2^3. Since 7 - 3 = 4, you can do
`24 \cdot  4` which equals 96