<PRE><B>Question 850149</B>
In those 30 minutes the first plane from LA has already gone 210 miles
850-210=640
(420+530)x=640
They meet after x = 0.67368 hours
D= 530*0.67368=357.05 from Denver
L=210+420*.67368
L=850-(210+282.9456)=357.05 from Denver


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