a motorboat whose speed is 15 km/hr on still water goes 30 km downstream and c

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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 minutes. the speed of the stream (in km/hr) is :

Options:

A . 4

B . 5

C . 6

D . 10

Answer: Option B
Explanation :

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Question 1. 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 :

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Question 6. 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 :

Question 7. a man can row at 5 kmph in still water . if he velocity of current is 1 kmph and it takes him 1 hour to row to a place....and come back , how far is he place ?

Question 8. a boat takes 19 hours for travelling downstream from point a to point b and coming back to a point c midway between a ....4 kmph and the speed of the boat in still

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