Boat goes downstream from P to Q in 2hrs, upstream in 6hrs
and if speed of stream was ½ of boat in still water. Find
dist PQ
6 4 10 none
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Answer Posted / vasanthraj
u+v=km/hr for down stream
u-v=km/hr in upstream;
heare.....v=u/2;
here times are....2hr for down straem,6hr for upstream...
assume dist between pq is::6 then.....
u+u/2=3kmper hour(total 2hr so....2*3=6)
u=2;v=1....ok....
u-u/2=1kmperhour(6hr..6*1=6km)...u=2;v=1;....hmmmm
so 6km is satisified.....ans==6km...(dist betwn pq)
| Is This Answer Correct ? | 22 Yes | 14 No |
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