A) 1 : 4
B) 1 : 2
C) 3 : 1
D) 3 : 2
Correct Answer: C
Solution :
[c] Let speed of boat in still water = x km/h Speed of current = y km/h \[\] \[(x+y)\times t=(x-y)\times 2t\] x = 3y x : y = 3 : 1You need to login to perform this action.
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