Question 963995

___________________rate___________time_________distance
longertime_________r______________t+k__________U
shortertime________r_______________t___________V


Your example uses k=3, U=1200, V=480.


Same general problem as  this:  <a href="http://www.algebra.com/algebra/homework/word/travel/Travel_Word_Problems.faq.question.963985.html">http://www.algebra.com/algebra/homework/word/travel/Travel_Word_Problems.faq.question.963985.html</a>