Problema Solution
Joe walked from his home to Susan's in 20 min. Then together it took joe & Susan 25 min to walk from Susan's house to school. If they arrive at school at 7:15 am, what time did joe leave his home
Answer provided by our tutors
The total time of Joe's walk is 20 + 25 = 45 min.
This means Joe left home 45 min before the arrival, that is, 45 min before 7:15 am.
7:15 am - 45 min = 6:30 am
Joe left his home at 6:30 am.