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A boat goes 30km upstream and …

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A boat goes 30km upstream and 44km downstream in 10hours. In 13hours, it can go 40km upstream and 55km downstream. Determine the speed of the stream and that of the boat in still water

Posted by Rahul Kumar Yadav 4 years, 11 months ago

CBSE > Class 10 > Mathematics

1 answers

Gaurav Seth 4 years, 11 months ago

Let speed of boat in still water be x km/h and speed of stream be y km/h.

Speed upstream= (x - y) km/h

Speed downstream= (x + y) km/h

On subtracting, we get,

_{On solving, we get,}

Speed of boat in still water = 8 km/h

And, Speed of stream = 3 km/h

0Thank You

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CBSE > Class 10 > Mathematics