How many miles per hour is 25.4 feet per second?

##17.3"mi"/"hr"##

##("25.4 ft")/("1 sec")xx("1 mi")/("5280 ft")xx("60 sec")/("1 min")xx("60 min")/("1 hr")##

##=(25.4 color(red)(cancel(color(black)("ft"))))/(1 color(blue)(cancel(color(black)("sec"))))xx("1 mi")/(5280 color(red)(cancel(color(black)("ft"))))xx(60 color(blue)(cancel(color(black)("sec"))))/(1 color(green)(cancel(color(black)("min"))))xx(60 color(green)(cancel(color(black)("min"))))/("1 hr")##

##=25.4/1xx("1 mi")/5280xx60/1xx60/("1 hr")##

##=(25.4xx60xx60)/5280 "mi"/"hr"##

##=17.3"mi"/"hr"##