The speed of the boat in still water in 12 kmph. It can travel downstream through 54 kms in 3 hrs. In what time would it cover the same distance upstream?	Options:
A) 8 hours
B) 6 hours
C) 4 hours
D) 5 hours
E) 9 hours
Still Water=12km/hr   Downstream=54/3= 
<gadget id="calculator">54/3</gadget>
<output>18</output>
18km/hr   Upstream=&gt;&gt; still water=(u+v/2) =&gt;&gt; 12=u+18/2 = 6km/hr   So time taken in upstream = 545/6 =9hrs   ANSW9 hoursR:9 hours
<result>E</result>
The speed of the boat in still water in 12 kmph. It can travel downstream through 54 kms in 3 hrs. In what time would it cover the same distance upstream?