Nick is a distance runner. If he ran 5280 feet in 4 minutes and 2 seconds, what is his speed in feet per second?

So,

Nick ran 5280 ft. (1 mi.) in 4 min. 2 secs.

Convert 4 min. 2 secs. to secs.

60 secs. = 1 min.

4 (60) + 2 = secs.

240 + 2 = secs.

242 = secs.

Nick ran 5280 ft. in 242 secs.

5280ft./242sec.

Divide both sides by 242

21.81818181 ... ft./sec.