Dinosaurs have been extinct for about 6.5x10^7 years, while Neanderthals have been extinct for about 3.0x10^4 years. About how many times longer have dinosaurs been extinct than Neanderthals?
A.
1,000 times longer
B.
2,000 times longer
C.
10,000 times longer
D.
20,000 times longer
The difference in time between dinosaurs and Neanderthals being extinct can be calculated by dividing 6.5x10^7 by 3.0x10^4:
(6.5x10^7) / (3.0x10^4) = 2166.67
This means that dinosaurs have been extinct about 2166.67 times longer than Neanderthals. Rounding this to the nearest whole number, the answer is:
B. 2,000 times longer