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22 Jan 2021 : STREAMS

Ajinkya can row upstream at 20 kmph and downstream at approx. 18.65 mph. The speed of the stream is?

OPtion

1) 5
2) 8
3) 2.5
4) 4.5
5) 3
6) 4
7) 3.5
8) 7
9) 6
10) None of the above

Solution

Speed in upstream = 20 kmph
Speed in downstream = 18.65 mph = 30 kmph
So the speed of stream = ½ (30 – 20) = 5 kmph

Correct Option: 1 Best Solution (3)

Best user's solution

Varun

18.65 miles per hour
= 30kilometer per hour
=> In KMPH
Upstream= 20
Down stream= 30
Stream speed= (30-20)/2
= 5

Is this solution helpfull? Yes | No   

Karan

18.65 mph = 30 kmph
speed of stream =(30-20)/2= 5 kmph

Is this solution helpfull? Yes | No   

Billal Hossain

Rate of upstream = 20 kmph
Rate of downstream=18.65 mph= 18.65*1.609=30 kmph
Therefore, speed of the stream is =(30-20)/2=5
So. My option is (1)

Is this solution helpfull? Yes | No