SOLUTION: a long distance trucker travled 220 miles in one direction during a snow storm. The return trip in a rainy weather was accomplished at doubled the speed and took 5 hours less time.

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Question 328385: a long distance trucker travled 220 miles in one direction during a snow storm. The return trip in a rainy weather was accomplished at doubled the speed and took 5 hours less time. find the speed going.
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Rate*Time=Distance
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R1%2AT1=220
R2%2AT2=220
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R2=2%2AR1
T2=T1-5
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1.R1%2AT1=220
2.2R1%2A%28T1-5%29=220
From eq. 1,
T1=220%2FR1
Substituting into eq. 2,
2R1%2A%28%28220%2FR1%29-5%29=220
440-10R1=220
-10R1=-220
highlight%28R1=22%29mph
Then from above,
R2=44mph