A person can swim in still water at 8 km/h. If the speed of water 4 km/h, how many hours will the man take to swim back against the current for 8km?  Choose one:
A) 2
B) 4
C) 5
D) 6
E) 7
M = 8   S = 4   US = 8 - 4= 
<gadget id="calculator">8 - 4</gadget>
<output>4</output>
4   D= 4   T = 8/4= 
<gadget id="calculator">8/4</gadget>
<output>2</output>
2 2nswer:2
<result>A</result>
A person can swim in still water at 8 km/h. If the speed of water 4 km/h, how many hours will the man take to swim back against the current for 8km?