Question 668881
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Hi,
Dawn starts running 5 minutes after Julia does.
Julia runs at an average speed of 8 ft/s : 480ft/min 
Dawn runs at an average speed of 9 ft/s :  540ft/min
how many minutes{{{highlight(x)}}} after Dawn starts running will she catch up with Julia
Translate into an equation: Note: Distance the same for both.  D= rt
 Dawn D = Julia D
  540*x = 480(x+5)
    (60ftpm) x = 2400ft 
      x = 40min