a boat man goes 4 km against the current of the stream in 1hour and goes 2 km

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Question

a boat man goes 4 km against the current of the stream in 1hour and goes 2 km along the current in 5 minutes. how long will it take to go 21 km in stationary water?

Options:

A . 1 Hour

B . 1 Hour 15 Minutes

C . 1 Hour 30 Minutes

D . 1 Horr 45 Minutes

Answer: Option B
Explanation :

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Question 1. a boat can travel 8 km an hour in still water, but it takes thrice as much time for travelling the same distance again....the current. the speed of the current (in kmph) is:

Question 2. a boat man goes 4 km against the current of the stream in 1hour and goes 2 km along the current in 5 minutes. how long....will it take to go 21 km in stationary water?

Question 3. a man can row at 5 km/hr in still water. if the velocity of current is 1 km/hr and it takes him 1 hour to row to a pla....a place and come back, how far is the place?

Question 4. a man can row 8 kmph in still water. if the velocity of the current is 2 kmph and it takes him 2 hours to row to a pla....a place and come back. how far is the place?

Question 5. a person can swim at 15/2 km/hr in stagnant water. in a river with 1.5 km/hr current, the person swims to a certain di....50 minutes. what is the distance between the two poin

Question 6. a boat takes 4 hours for travelling downstream from point a to point b and coming back to pint a upstream. if the velo....speed of the boat in still water is 4 km/hr.

Question 7. a boat takes 9 hours to travel a distance upstream and takes 3 hours to travel the same distance downstream. if the sp....4 km/hr, what is the velocity of the stream ?

Question 8. a boat running downstream covers a distance of 16 km in 2 hours, while covering the same distance upstream it takes 4 ....is the speed of the boat in still water ?

Question 9. a boat takes 4 hours for travelling downstream from point a to point b and coming back to pint a upstream. if the velo....speed of the boat in still water is 4 km/hr.

Question 10. a boat takes 9 hours to travel a distance upstream and takes 3 hours to travel the same distance downstream. if the sp....4 km/hr, what is the velocity of the stream ?

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