Question

A turtle swims at a speed of 12 mph. A boy swims at a speed of 4.4 ft per s.

Answer 1

The turtle`s speed:
v t = 12 miles / hour = /*5,280 
= 63,360 ft / hour =   / : 3
= 21,120 yards / hour =   / : 60
= 352 yards / minute
The boy`s speed:
v b = 4.4 ft/ s   =  / * 60/3
= 4.4 * 20 yards / minuet = 88 yards / minute
v t : v b = 352 : 88 = 4
The turtle swims 4 times faster than the boy.