The cook peels 5 1/2 potatoes every 1/10 of a minute. what is the unit rate of potatoes per minute? how many potatoes can the cook peel in 60 minutes?

Converting from one units to another set of units, a conversion factor is needed. For this problem, the conversion factor would be 1 mile = 1610 m. We convert the value of speed of light from meters/second to miles/hour as follows:

3 x 10^8 m/s (1 mile / 1610 m) ( 60 s / 1 min ) ( 60 min / 1 hr ) = 6.71 x 10^8 miles / hr