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
- If a man row at 10 km/h along the current & the rate of the current is 2 km/h, what is the man's rate against the current?
- In a stream running at 2 km/hr, a motor boat goes 10 km upstream and back again to the starting point in 55 minutes. Find the speed of the motor boat in the still water.
- 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 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 can row downstream at 10 kmph and upstream at 5 kmp. The man's rowing rate in still water is--
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