Mathematics
Medium
Question
The current of a stream runs at the rate of 4 kmph. A boat goes 6 km and back to the starting point in 2 hours, then find the speed of the boat in still water?
A
10 kmph
B
21 kmph
C
8 kmph
✓ Official correct answer
D
12 kmph
Community credibility
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A
10 kmph
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B
21 kmph
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C
8 kmph
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D
12 kmph
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