SOLUTION: a boat is going a distance of 600km. the way upstram had a current with it at 50 km/h while the one back against the current was 50 km/h also. The total time of the one there was o

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Question 38621: a boat is going a distance of 600km. the way upstram had a current with it at 50 km/h while the one back against the current was 50 km/h also. The total time of the one there was one less thamn the one back. What is the spped of the boat in still air?
Answer by Paul(988) About Me  (Show Source):
You can put this solution on YOUR website!
Letting x be the speed of the boat:
-600%2F%28x%2B50%29%2B600%2F%28x-50%29=1
600[(x+50)-(x-50)]=(x-50)(x+50)
600%28100%29=x%5E2-2500
x=250
Hence, the speed if 250 km/h.
Paul.