A man can row 6 km / hr in still water. If the speed of the current is 2 km / hr. it takes 3 hrs more in upstream than in the downstream for the same distance . The distance is __
A
30 km
B
24 km
C
20 km
D
32 km
Correct Answer: 24 km
D/(6 - 2) – D/(6 + 2) = 3 D = 24. Ans: B