A boat sail downstream from point A to point B, which is 10 km away from A, and then returns to A. If the actual speed of the boat (in still water) is 3 km/h, the trip from A to B takes 8 hours less than that from B to A. What must the actual speed of the boat for the trip from A to B take exactly 100 minutes?

A boat sail downstream from point A to point B, which is 10 km away from A, and then returns to A. If the actual speed of the boat (in still water) is

A boat sail downstream from point A to point B, which is 10 km away from A, and then returns to A. If the actual speed of the boat (in still water) is 3 km/h, the trip from A to B takes 8 hours less than that from B to A. What must the actual speed of the boat for the trip from A to B take exactly 100 minutes?

  • A. 1 km/h
  • B. 2 km/h
  • C. 3 km/h
  • D. 4 km/h
 

The correct answer is option D. 4 km/h. Can you explain this answer in the comments?



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A boat sail downstream from point A to point B, which is 10 km away from A, and then returns to A. If the actual speed of the boat (in still water) is 3 km/h, the trip from A to B takes 8 hours less than that from B to A. What must the actual speed of the boat for the trip from A to B take exactly 100 minutes?




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About the Author

This is Ashutosh Nautiyal. Currently, I'm pursuing my graduation from Bipin Tripathi Kumaon Institute Of Technology, Dwarahat, Almora and my branch is Civil Engineering. I have done my schooling at Omkarananda Saraswati Nilayam, Rishikesh.

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