Two cyclists begin traveling in the same direction on the same path. One travels 20mph and the other at 14mph. After how many hours will they be 15 mile apart

• let time = t hr
  so
  20*t-14*t=15
  or 6t=15
  or t = 2.5 hr
  
• 11 years agoHelpfull: Yes(2) No(0)
• After 2&1/2 hours
  Relative speed=20-14= 6 mph
  So time for 15 miles=15/6=2.5 or 2 1/2 hrs.
• 11 years agoHelpfull: Yes(1) No(0)
• if the time is x
  so, 20x-14x should be 15
  so 6x=15
  thus x=2.5
  so after 2.5 hrs
• 9 years agoHelpfull: Yes(0) No(0)