Question

kaitlin is on a long car trip every time she stops she loses 15 minutes of travel time is she stops 5 times how late will she be to her destination

Answer 1

She ADDS (5 x 15) = 75 minutes to the length of her trip.

All we know is that she arrives 75 minutes later than she would if she hadn't stopped. We have no way to tell how late she'll be, because we don't know her original travel plan.