SOLUTION: I need some help on this. If a boats speed is 10km/h and the lakes speed is 2km/h, how many hours will it take for the boat to go 27km and back 27 km

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Question 948246: I need some help on this.
If a boats speed is 10km/h and the lakes speed is 2km/h, how many hours will it take for the boat to go 27km and back 27 km
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Rate x Time = Distance.
R%2At=D
Time going to,
%2810%2B2%29t%5B1%5D=27
t%5B1%5D=27%2F12
Time coming back,
%2810-2%29t%5B2%5D=27
t%5B2%5D=27%2F8
So then the total time,
t=t%5B1%5D%2Bt%5B2%5D
t=27%2F12%2B27%2F8%7D%7D%0D%0A%7B%7B%7Bt=54%2F24%2B81%2F24
t=135%2F24
t=45%2F8hr