a boat covers a certain distance downstream in 4 hours but takes 6 hours to re

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a boat covers a certain distance downstream in 4 hours but takes 6 hours to return upstream to the starting point. if the speed of the stream be 3 km/hr, find the speed of the boat in still water

Options:

A . 15 km/hr

B . 12 km/hr

C . 13 km/hr

D . 14 km/hr

Answer: Option A
Explanation :

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Question 1. a boat running downstream covers a distance of 22 km in 4 hours while for covering the same distance upstream, it take....what is the speed of the boat in still water?

Question 2. in a river flowing at 2 km/hr, a boat travels 32 km upstream and then returns downstream to the starting point. if its....still water be 6 km/hr, find the total journey time.

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Question 4. a man can row 40 km upstream and 55 km downstream in 13 hours, also he can row 30 km upstream and 44 km downstream in ....man in still water and the speed of the current.

Question 5. a man can row 18 kmph in still water. it takes him thrice as long to row up as to row down the river. find the rate of....to row down the river. find the rate of stream.

Question 6. a motorboat whose speed is 15 km/hr on still water goes 30 km downstream and comes back in a total of 4 hours 30 minut....minutes. the speed of the stream (in km/hr) is :

Question 7. a man rows to a place 48 km distant and back in 14 hours. he finds that he can row 4 km with the stream in the same ti....the stream . the rate of one stream is :

Question 8. the speed of a boat in still water is 15 km/hr and the rate of current is 3 km/hr . the distance travelled downstream ..... the distance travelled downstream in 12 minutes is :

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