সকল সরকারী/বেসরকারী পরীক্ষার প্রশ্ন পেতে ক্লিক করুন গণিতের আইকিউ টেস্ট করতে ক্লিক করুন 
A boat sails m miles upstream at the rate of r miles per hour. If the rate of the stream is s miles per hour, how long will it take the boat to return to its starting point?
A boat sails m miles upstream at the rate of r miles per hour. If the rate of the stream is s miles per hour, how long will it take the boat to return to its starting point?
- ক. m/(r + 2s)
- খ. m/(r + s)
- গ. (m + r)/s
- ঘ. mr - s
সঠিক উত্তরঃ m/(r + 2s)
এ সম্পর্কিত আরো প্রশ্ন দেখুন
- Hasan can run 10 miles per hour, whilr Jack can run only 8 miles per hour. If they start at the same time from the same point and run is opposite direction, how far apart (to the nearest mile) will they be after 10 minutes?
- A 240-meter long train crosses a pole in a platfrom in 8 seconds. Determine the speed of the train in km/hr.
- On a trip of 200 miles, a man travels at the rate of 40 niles per hour for the first 100 miles. For the rest of the trip, he travels at the rate of 55 miles per hour. What is his average speed in miles per hour for the total trip?
- A truck driver must be complete a 180-mile trip in 4 hours. If his average speed is 50 miles per hour for first 3 hours, then how fast must he travle for the final hour?
- If a plane can travel P miles in Q hours, how long will it take to travel R miles?
There are no comments yet.