SOLUTION: A diesel train traveled to Johannesburg and back. It took one hour longer to go there then it took to come back. The average speed on the trip there was 27 km/h. The average speed

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Question 482604: A diesel train traveled to Johannesburg and back. It took one hour longer to go there then it took to come back. The average speed on the trip there was 27 km/h. The average speed on the way back was 36km/h. How many hours did the trip there take.
Answer by jorel1380(3719) About Me  (Show Source):
You can put this solution on YOUR website!
27(n)=36(n-1)
27n=36n-36
36=9n
n=4
It took 4 hours to get there, 3 back..