Hi TG,
This is an interesting little question!
"At 7 am Brooke leaves home to go on a business trip driving 35 miles per hour. Fifteen minutes later, Bart discovers that Brooke forgot her presentation materials. He drives 50 miles per hour to catch up with her. If Bart is delayed 30 minutes with a flat tire, when will he catch up with Brooke"
Let the distance travelled by X. This is the same for both of them.
Let T= time that Brooke travels (in hours)
Your first question is:
If Brooke travels for T hours, how long does Bart travel for (in hours)?
You have to set up an equation for Brooke and another equation for Bart
Use speed=distance/time, except you will want distance to be the subjsect of both fromulas
Now solve them simultaneously to find T
Is that enough help?
+118654 
