SOLUTION: Alan and Dave leave from the same point driving in opposite directions. Alan driving at 55 miles per hour and Dave at 65 mph. Alan has a one hour head start. How long will they be

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Question 219721: Alan and Dave leave from the same point driving in opposite directions. Alan driving at 55 miles per hour and Dave at 65 mph. Alan has a one hour head start. How long will they be able to talk on their car phones if the phones have a 250 mile range?
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
55T+65(T-1)=250
55T+65T-65=250
120T=250+65
120T=315
T=315/120
T=2.625 HOURS AFTER ALLEN LEAVES THEY'LL BE 250 MILES APART.