Calculate how long it will take a swimmer to swim a distance of 8km against the current of a river which flows at 1.4km/hr, given that he can swim in still water at 3km/h  Select
A) 20 seconds  B) 3  C) 4  D) 1  E) 5
swim in still water at = 3   speed of river= 1.4   US = 3 - 1.4= 
<gadget id="calculator">3 - 1.4</gadget>
<output>1.6</output>
1.6   Distance= 8   T = 8/1.6= 
<gadget id="calculator">8/1.6</gadget>
<output>5</output>
5   Answer: 5
<result>E</result>
Calculate how long it will take a swimmer to swim a distance of 8km against the current of a river which flows at 1.4km/hr, given that he can swim in still water at 3km/h