সকল সরকারী/বেসরকারী পরীক্ষার প্রশ্ন পেতে ক্লিক করুন গণিতের আইকিউ টেস্ট করতে ক্লিক করুন
A man can row downstream at 10 kmph and upstream at 5 kmp. The man's rowing rate in still water is--
A man can row downstream at 10 kmph and upstream at 5 kmp. The man's rowing rate in still water is--
- ক. 2.5 km/hr
- খ. 5 km/hr
- গ. 7.5 km/hr
- ঘ. 15 km/hr
সঠিক উত্তরঃ 7.5 km/hr
এ সম্পর্কিত আরো প্রশ্ন দেখুন
- A man can rows 6 km/hr in still water. When the river is running at 1.5 km/hr, it takes him 1.5 hour to row to a place and back. How far is the place?
- A man rows upstream 24 km and downstream 36 km, taking 6 hours each time. The velocity of the current will be:
- A ferry can travel twice as fast when empty as when it is full. It travels 20 miles with full load, spends 1 hours for unloading & returns to its original port empty. It took 11 hours to complete the journey. What is the speed when the ferry is empty?
- The velocity of a boat rowed downstream is three times that of the same boat rowed upstream. If the speed of the stream is 2.5 miles per hour what is the speed of rowing in miles/hr?
- A certain river has a current of 3 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?
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