Aptitude - Boats and Streams - Discussion

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"In the middle of difficulty lies opportunity."

- Albert Einstein

A boat can travel with a speed of 13 km/hr in still water. If the speed of the stream is 4 km/hr, find the time taken by the boat to go 68 km downstream.

[A].	2 hours	[B].	3 hours
[C].	4 hours	[D].	5 hours

Answer: Option E

Explanation:

Speed downstream = (13 + 4) km/hr = 17 km/hr.

Time taken to travel 68 km downstream = 68 hrs = 4 hrs.

17

Balaji said: (Fri, Mar 18, 2011 12:38:13 AM)

In the question they given the data that speed of boat 13 km/hr and speed of stream is 4 km/hr and they asked us to solve the time taken by the boat in down stream for a distance of 68 kms. we know as per the formula down stream means speed of boat + speed of stream therefore, down stream = 13+4=17 km/hr as per the problem we got to find time taken by boat to travel a distance of 68km down stream. we have formula that, time=distance/speed =68/17 =4 hours

Manasa said: (Sun, Jun 12, 2011 11:37:43 AM)

Thanks Balaji.

Geetha said: (Thu, Jun 16, 2011 03:27:59 PM)

Thanks for your explanation.

Ganesh said: (Fri, Jul 29, 2011 02:14:06 PM)

Thanks balaji

Sonam said: (Thu, Nov 3, 2011 01:38:29 PM)

Thanks balaji.

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Aptitude - Boats and Streams - Discussion

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