Math Wise - Season 1 Episode 5 Comparing: Finding a Common Unit

At a new location, a marina, Cynthia is running a successful business as a sailing instructor. But the business threatens to stop dead when a new student, Myrna Mitchell, damages the hull of Cynthia's sailboat. Can she afford a new hull? Can she afford to have someone look at it after a three-week layover? Or may another sloution pop up from somewhere else?