The speed of the boat in still water in 12 kmph. It can travel downstream through 45 kms in 3 hrs. In what time would it cover the same distance upstream?	Choose the correct choice from the following answers:	A) 8 hours	B) 6 hours	C) 4 hours	D) 5 hours	E) 6 hours
Still Water=12km/hr   5 hoursownstream=45/3= 
<gadget id="calculator">45/3</gadget>
<output>15</output>
15km/hr   Upstream=&gt;&gt; still water=(u+v/2) =&gt;&gt; 12=u+15/2 = 9km/hr   So time taken in upstream = 45/9= 
<gadget id="calculator">45/9</gadget>
<output>5</output>
5hrs   ANSWER:5 hours
<result>D</result>
The speed of the boat in still water in 12 kmph. It can travel downstream through 45 kms in 3 hrs. In what time would it cover the same distance upstream?