SOLUTION: Pauline and Valerie leave simultaniously from the same point hiking in opposite directions, Pauline walking at 2 mph and Valerie at 3 mph. How long can they talk on their walkie-ta

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Question 500846: Pauline and Valerie leave simultaniously from the same point hiking in opposite directions, Pauline walking at 2 mph and Valerie at 3 mph. How long can they talk on their walkie-talkied  if the walkie-talkies have 30 mile radius?
Answer by geetha_rama(94) About Me  (Show Source):
You can put this solution on YOUR website!
Speed of Pauleine = 2mph
Speed of Valerie = 3mph
walkie talkie coverage = 30 mile radius
Max distance coveage by walkie talkie= diameter = 60 miles
Distance covered in time t by Pauleine = 2t
Distance covered in time t by Valerie = 3t
2t+3t = 60
5t = 60
t = 12 hours
For 12 hours Pauleine and Valerie can talk