SOLUTION: If two buses travel in different directions, one is going 20mph slower than the other. After 3 hours, they are 270 miles apart. How fast is each bus going?

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Question 342874: If two buses travel in different directions, one is going 20mph slower than the other. After 3 hours, they are 270 miles apart. How fast is each bus going?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Rate*Time=Distance
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R%5B1%5D%2At=D%5B1%5D
R%5B2%5D%2At=D%5B2%5D
R%5B2%5D=R%5B1%5D-20
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Find D when t=3,
D=D%5B1%5D%2BD%5B2%5D
D=R%5B1%5Dt%2B%28R%5B1%5D-20%29t
R%5B1%5D%283%29%2B%28R%5B1%5D-20%29%283%29=270
2R%5B1%5D-20=90
2R%5B1%5D=110
highlight%28R%5B1%5D=55%29 mph
Then
R%5B2%5D=55-20
highlight%28R%5B2%5D=35%29 mph