Mathematics
Medium
Question
The speed of a boat in still water is 2km/hr. If its speed upstream be 1km/hr then speed of the stream is________?
A
1.5km/hr
B
3km/hr
C
1km/hr
✓ Official correct answer
D
none
Community credibility
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A
1.5km/hr
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B
3km/hr
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C
1km/hr
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D
none
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