সকল সরকারী/বেসরকারী পরীক্ষার প্রশ্ন পেতে ক্লিক করুন গণিতের আইকিউ টেস্ট করতে ক্লিক করুন 
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 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?
- ক. 3 miles per hour
- খ. 6 miles per hour
- গ. 9 miles per hour
- ঘ. 12 miles per hour
সঠিক উত্তরঃ 9 miles per hour
এ সম্পর্কিত আরো প্রশ্ন দেখুন
- A man can row downstream at 14 km/h and upstream at 8 km/hr. What is the rate of the stream?
- 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 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?
- Speed of the boat in standing water is 6 km/h and the speed of the stream is 2 km/h. What will be the total time if a man goes by the boat upstream 32 km and comes back to the starting point?
- 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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