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Two brothers leave from the same point driving in opposite​ directions, the first brother driving at 60 miles per hour and the second at 65 mph. The first brother has a​ one-hour head start. If each brother has a communication device that allows him to talk to the other for up to a 250-mile ​range, how long will they be able to talk to each​other?

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They will be able to talk to each other... View the full answer

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  • where does the 260 come in the equation?? why would it not be 250??
    • amannuch
    • May 02, 2018 at 11:45am
  • it is 250. Kindly correct that. 60x+60 + 65x = 250, giving;125x = 190, x = 1.52 hrs x = 1 hour 31 minutes and 12 seconds
    • kirimi12
    • May 02, 2018 at 11:50am
  • what is the formula for converting the decimal to time?
    • amannuch
    • May 02, 2018 at 12:09pm
  • 1.52 means you have 1 hour and 0.52 minutes. multiplying 0.52x60 gives 31.2 minutes which is 31 minutes and 0.2 seconds. Multiplying 0.2x60 gives 12 seconds
    • kirimi12
    • May 02, 2018 at 12:13pm
  • Teacher is saying it is incorrect. that the answer is 2 13/25
    • amannuch
    • May 02, 2018 at 12:53pm

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