SOLUTION: Can someone help me on this problem? Ching leaves San Francisco and travels toward Los Angeles at 50 mi/h. An hour later, Phil leaves Los Angeles and travels toward San Franc

Question 54790: Can someone help me on this problem?
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?
Thanks,
Sher
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
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?
:
Let t = no. of hrs till Ching meets Phil
:
Let (t-1) = no. of hrs till Phil meets Ching
:
Write a distance equation: Dist = speed * time
:
Ching's Dist + Phil's Dist = 380
:
50t + 60(t-1) = 380; multiplied what's inside the brackets
:
50t + 60t - 60 = 380
:
110t = 380 + 60; added 60 to both sides
:
110t = 440
:
t = 440/110
:
t = 4 hrs for Ching to meet Phil
:
:
Check: (50*4) + (60*3) = 380

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