Lana took one and a half times as long as jayden to finish a project. If lana took 15 days how long did jayden took

22 days and 12 hours because 15*1=15. And half of 15 is 7.5 but we're talking about days so half of a day is 12 hours so 15+7=22 and another 12 hours hours. So the answer is 22 days and 12 hours or 22 and a half days.

Let x represent how many days it took jayden to finish

15/1.5=10