Answer:
6 miles an hour or 5 knots
Explanation:
this is the answer because 15 divided by 2.5 = 6 and 6 times 2.5 is 15 so the answer to miles per hour is 6 and if you multiply 1.2 by 5 you get 6 why 1.2 because each knot is worth 1.2 miles an hour.
5.7m questions
7.4m answers