৮ ঘন্টা
৯ ঘন্টা
১০ ঘন্টা
১২ ঘন্টা
Source: Krishi Bank - Officer (Cash) - 04.09.2015
Answer: ৯ ঘন্টা
Explanation:
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A boat sailing against a stream of of river takes 6 hours to travel 24 kms, while sailing with the stream it takes 4 hours to travels the same distance. What is the speed of the stream ?
A certain river has a current of 4 miles per hour.A boat takes twice as long to travel upstream between two points as it does to travel downstream between the same two points . What is the speed of the boat in still water ?
A man takes 3 hours 45 minutes to row a boat 22.5 km downstream of a river and 2 hours 30 minutes to cover a distance of 10 km up stream . Find the speed of the river current in km /hr.
A man takes 3 hours 45 minutes to row a boat 22.5 km downstream of a river and 2 hours 30 minutes to cover a distance of 10 km up stream. Find the speed of the river current in km/hr.
একজন মাঝি স্রোতের আনুকূলে ২ ঘণ্টায় ৬ মাইল যায় এবং ৫ ঘণ্টায় যাত্রাস্থানে ফিরে আসে । তার মোট ভ্রমণে প্রতি ঘণ্টায় গড়বেগ কত?
30 pens and 75 pencils altogether were purchased for Tk. 510. If the speed of the stream is 3 km / hr then find time taken by boat to travel 52 km downstream.
A boat can travel form point A to point B and return back to point a in 9 hours. Speed of the boat in still water is 8 km/h and the speed of the stream is 4 km/h. Find the distance between A and B.
A boat sails m miles upstream at the rate of r miles per hour. If the rate of the stream is s miles per hour, how long will it take the boat to return to its starting point?
Travelling at a constant speed of 32 miles per hours, a certain motorboat consumers 24gallons of fuel per hour. What is the fuel consumption of his boat this speed measured in miles per gallons of fuel?
লঞ্চ ও স্রোতের গতিবেগ যথাক্রমে ১৮ কি.মি. ও ৬ কি.মি.। নদীপথে ৪৮ কি.মি. অতিক্রম করে পুনরায় ফিরে আসতে সময় লাগবে?
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