<PRE><B>Question 68498</B>
Ching leaves San Francisco and travels toward Los Angeles at 50 mi/h. An hour later, Phil leaves Los Angeles and travels toward San Francisco at 60 mi/h. If the two cities are 380 miles apart, how many hours will it take for Ching to meet Phil? 
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Ching DATA:
Rate = 50 mph ; time = x hrs ; distance = rt= 50x miles
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Phil DATA:
Rate = 60 mph ; time = x-1 hrs ; distance = rt = 60(x-1)=60x-60 miles
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EQUATION:
distance + distance = 380 miles
50x + 60x-60 = 380
110x=440
x=4 hrs (hours need for Ching to meet Phil)
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Cheers,
Stan H.</PRE>