Imad F. answered • 05/30/20

Business Expert & IT Professional - Online Tutor

Hello Nicole;

That is a smart question, ships don't sail by miles, they sail by knots , one knot is 6076 foot , and each mile is 5280 Foot, so we work it out like this : .

General speed law is : Speed = Speed * Time

X = 180 / 18 = 10 Miles / Hour as *general speed *

And converting the numbers, we find that :

**(10 Miles/Hour * 5280 Ft) / 6076 = 8.68 Knot - ship's speed in the return trip**

Hope this answers clears your question;

Have a good day;

Imad Fawzi