SOLUTION: A paddleboat can move at a speed of 20 km/h in still water. The boat is paddled 6 km downstream in a river in the same time it takes to go 3 km upstream. What is the speed of the
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Question 1000200: A paddleboat can move at a speed of 20 km/h in still water. The boat is paddled 6 km downstream in a river in the same time it takes to go 3 km upstream. What is the speed of the river?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = the speed of the river in km/hr
= the speed of the paddleboat going downstream in km/hr
= th speed of the paddleboat going upstream in km/hr
Let = time in hrs to go upstream or downstream
----------------------------
Going downstream:
(1)
Going upstream:
(2)
--------------------
(1)
and
(2)
--------------------
km/hr
-------------------
check answer:
(1)
(1)
(1)
and
(2)
(2)
(2)
(2)
OK
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