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If a boat goes 7km upstream in 42 min & speed of stream is 3kmph. Then what is the speed of boat in still water?

Option 1)

4.2 kmph

Option 2)

9 kmph

Option 3)

13 kmph

Option 4)

3.5 kmph

Option 5)

21 kmph

Answers (1)

best_answer

Upstream Speed = 7 x 60/42 => 10 Kmph

Speed of Stream = 3 Kmph

Speed Of Boat = 10 + 3 => 13 Kmph

Posted by

rishi.raj

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