Question

Two brothers leave from the same point driving in opposite​ directions, the first brother driving at 55 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 300​-mile ​range, how long will they be able to talk to each​ other?

Answer 1

Hey there

the answer is

Equation:

distance + distance = 260 miles

60x+60 + 45x = 260

105x = 200

x = 40/21 = 1.904 hrs = 1 hr 54 minutes 17 seconds

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