Ritu can row downstream 20 km in 2 hours, and upstream 4 km in 2 hours. Find her speed of rowing in still water and here speed of the current.

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asked Jan 30, 2018 in Mathematics by sforrest072 (157,439 points) 60 409 936

 Ritu can row downstream 20 km in 2 hours, and upstream 4 km in 2 hours. Find her speed of rowing in still water and here speed of the current.

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answered Jan 30, 2018 by mdsamim (213,225 points) 5 10 15
edited Mar 5, 2018 by faiz
 
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(i) Let her speed of rowing in still water be x km/h and the speed of the current be y km/h.
Case I: When Ritu rows downstream

Hence, speed of Ritu in still water = 6 km/h and speed of current = 4 km/h.

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