সকল সরকারী/বেসরকারী পরীক্ষার প্রশ্ন পেতে ক্লিক করুন গণিতের আইকিউ টেস্ট করতে ক্লিক করুন 
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 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?
- ক. 20/7
- খ. 10/7
- গ. 7/10
- ঘ. 7/20
সঠিক উত্তরঃ 20/7
এ সম্পর্কিত আরো প্রশ্ন দেখুন
- A man rows upstream 24 km and downstream 36 km, taking 6 hours each time. The velocity of the current will be:
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- 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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