সকল সরকারী/বেসরকারী পরীক্ষার প্রশ্ন পেতে ক্লিক করুন গণিতের আইকিউ টেস্ট করতে ক্লিক করুন 
A man rows upstream 24 km and downstream 36 km, taking 6 hours each time. The velocity of the current will be:
A man rows upstream 24 km and downstream 36 km, taking 6 hours each time. The velocity of the current will be:
- ক. 1
- খ. 5
- গ. 4
- ঘ. 3
সঠিক উত্তরঃ 1
এ সম্পর্কিত আরো প্রশ্ন দেখুন
- A ferry can travel twice as fast when empty as when it is full. It travels 20 miles with full load, spends 1 hours for unloading & returns to its original port empty. It took 11 hours to complete the journey. What is the speed when the ferry is empty?
- 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 downstream at 10 kmph and upstream at 5 kmp. The man's rowing rate in still water is--
- 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?
- 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.
There are no comments yet.