A boat can go 5 km upstream and $$7\frac{1}{2}$$ km downstream in 45 minutes. If can also go 5 km downstream and 2.5 km upstream in 25 minutes. How much time (in minutes) will it take to go 6 km upstream?
A. 30
B. 36
C. 24
D. 32
Answer: Option B
This Question Belongs to Arithmetic Ability >> Boats And Streams
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