Question 1050730
First, 1 hour,35 minutes equals 1-35/60 hours, or 1-7/12 hours, equaling 19/12 hours total. Let n be the amount of time for the trip from A to B. Then:
20n=18(19/12-n)
20n=342/12-18n
38n=57/2
n=57/76
20 km/h x (57/76)hrs. =15 kilometers between A and B. ☺☺☺☺