সকল সরকারী/বেসরকারী পরীক্ষার প্রশ্ন পেতে ক্লিক করুন গণিতের আইকিউ টেস্ট করতে ক্লিক করুন
A man rowing in favour of current can go 80 km in 10 hrs and he can go the same distance in 40 hrs against the current. What is the speed of the current per hour?
A man rowing in favour of current can go 80 km in 10 hrs and he can go the same distance in 40 hrs against the current. What is the speed of the current per hour?
- ক. 3 km
- খ. 4 km
- গ. 5 km
- ঘ. 10 km
সঠিক উত্তরঃ 3 km
এ সম্পর্কিত আরো প্রশ্ন দেখুন
- A man can now a boat at 10 km/hr in still water. If the speed of the stream is 6 km/hr, the time teken to row a distance of 80 km downstream is:
- A man can row downstream at 14 km/h and upstream at 8 km/hr. What is the rate of the stream?
- 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?
- A boat sailing against a stream of river takes 6 hours to travel 24 kms, while sailing with the stream it takes 4 hours to travel the same distance. What is the speed of the stream?
- A man can row downstream at 10 kmph and upstream at 5 kmp. The man's rowing rate in still water is--
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