Grades 7-8 Video Solutions 2024-2024_7-8

Video Transcription

Video Summary

Alex and Bob drive between points A and B. Alex’s speed is three times Bob’s, and they meet for the first time 15 minutes after they start. The problem is to find out how long it will take for them to pass each other the second time. <br /><br />Since Alex is three times faster, the distance Alex covers by the first meeting (AM) is three times the distance Bob covers (MB). Therefore, MB equals MN. Bob takes 15 minutes to travel MB and will take another 15 minutes for MN. Therefore, the total time for the second meeting is 30 minutes.

Keywords

Alex

Bob

speed

meeting

distance