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?

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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