Dinosaurs have been extinct for about years 6.5 x 10^7 years, while Neanderthals have been extinct for about years 3.0 x 10^4. About how many times longer have dinosaurs been extinct than Neanderthals?
To find out how many times longer dinosaurs have been extinct than Neanderthals, we need to divide the number of years dinosaurs have been extinct by the number of years Neanderthals have been extinct:
6.5 x 10^7 / 3.0 x 10^4
This equals 2.17 x 10^3, which means that dinosaurs have been extinct approximately 2,170 times longer than Neanderthals.