Answer
$2$
Work Step by Step
Total number of Big Macs consumed by Americans in one year is:
600 million = $600\times10^{6}$ Big Macs
If we use 300 million $=3\times10^{8}$ for the U.S. population, divide total number of Big Macs consumed with number of people to find how many Big Macs are consumed by each American in one year.
