Mathematics
Medium
Question
A man can row 30 km downstream and 20 km upstream in 4 hours. He can row 45 km downstream and 40 km upstream in 7 hours. Find the speed of man in still water?
A
15 kmph
B
10 kmph
C
12 kmph
D
12.5 kmph
✓ Official correct answer
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A
15 kmph
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B
10 kmph
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C
12 kmph
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D
12.5 kmph
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