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Ritu can raw down stream 20 …

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Ritu can raw down stream 20 km in 2 hours, and upstream 4 km in 2 hours. Find her speed of rowing in still water and the speed of current

Posted by Het Patel 6 years, 7 months ago

CBSE > Class 10 > Mathematics

2 answers

Palak Bansal 6 years, 7 months ago

let the speed of rowing be 'x' km/h let speed of current be 'y' km/h upstream speed =x-y downstream speed =x+y x+y=20/2 x+y=10...... eqn 1 x-y=4/2 x-y=2........eqn 2 by eliminating x+y=10 x-y=2 (-) (+) (-) 2y =8 y=4 putting y=8 in eqn 1 x+4=10 x=6 x=6 y=10. Ans

2Thank You

Arjun Bhatty 6 years, 7 months ago

Speed of rowing in still water = 6 km/hr Speed of current = 4 km/hr

1Thank You

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CBSE > Class 10 > Mathematics