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 cross 10 miles distance of a river in favor of the stream in 2 hours. He can come back against the stream along the same way in 5 hours. What is the average speed, in miles per hour, for the entire trip?
- A man can row upstream at 10 km/h and downstream at 16 km/h. His rate in still water is---
- Speed of a boat in standing water is 10 km/h and the speed of the stream is 2 km/h. A man rows to a place at a distance of 48 km and comes back to the starting point. What will be the total time taken by him?
- 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?
- 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?
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