Final answer:
The ratio of hands to cell phones is 2:1 in simplest form.
Step-by-step explanation:
The ratio of hands to cell phones can be determined by dividing the number of hands by the number of cell phones. In this case, there are 8 hands and 4 cell phones. So the ratio is 8:4. However, this ratio can be simplified to its simplest form by dividing both numbers by their greatest common factor, which is 4 in this case. Dividing 8 by 4 gives us 2, and dividing 4 by 4 gives us 1. So the simplest form of the ratio is 2:1.