Question

Ritu can row downstream 20 km in2 hrs and upstream 4 km in 2 hrs.Find her speed of rowing in still water and the speed of the current

Answer 1

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Answer 2

downstream speed =20/2=10km/hr

upstream speed =4/2=2km /hr

speed of rowing =D +U /2 =10+2/2 =6 km/hr

and speed of current D -U /2=10-2/2 =4 km/hr