A 142.6 miles per hour (multiply 230 by 0.62)
B 230000 meters per hour (230*1000 which is Km to m change rate)
C 3833.3 meters per minute (230000/60 which is how many minutes are in an hour)
D A category 5 hurricane, this hurricane has wind speeds of 157 or higher. This fake hurricane in this problem would be considered a category 5 hurricane.
I hope this helps!