Answer:
7.5in explanation:4in+2in+1.5in=7.5in
To make this situation easier to understand, you must simplify these fractions. 3/6 is equal to 0.5
6/6 is equal to 1
4/6 is equal to 0.3333 repeating.
With this info we can tell that Gina's sailboat went to longest distant in the fifteen minutes.
Hope this helps! :)