SOLUTION: A boat usually goes 20 miles per hour, but now there is a wind of five miles per hour working against it. How long will it take this boat to travel 30 miles?

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Question 251256: A boat usually goes 20 miles per hour, but now there is a wind of five miles per hour working against it. How long will it take this boat to travel 30 miles?
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
D=RT
30=(20-5)T
30=15T
T=30/15
T=2 HOURS TO GO 30 MILES.