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- A man swims downstream 30 km and upstream 18 km taking 3 hours each time, what is the speed of the man in still water?
Question 1:
A man swims downstream 30 km and upstream 18 km taking 3 hours each time, what is the speed of the man in still water? A. 2 kmph
B. 8 kmph
Feedback 30 --- 3 DS = 10
? ---- 1
18 ---- 3 US = 6
? ---- 1 M = ?
M = (10 + 6)/2 = 8
? ---- 1
18 ---- 3 US = 6
? ---- 1 M = ?
M = (10 + 6)/2 = 8
C. 16 kmph
D. 4 kmph
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