The speed of a boat is 10 km/h in still water. It covers a distance of 90 km in 15 hours going upstream. What is the speed of the stream?
A6 km/h
B3 km/h
C5 km/h
D4 km/h
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Related Questions:
What is the time taken by a boat to travel 120km upstream and back to the starting point if the speed of the boat is 25 km/hr, and the speed of stream is 5km/hr?
If sum of upstream and downstream speed of a boat is 82 kmph, and the boat travels 105 km. upstream in 3 hr, Find the time taken by boat to cover 141 km downstream.
The speed of a boat in still water is 15 km/h, and the speed of the current is 5 km/h. In how much time (in hours) will the boat travel a distance of 60 km upstream and the same distance downstream?
ഒഴുക്കിനൊപ്പം ഒരു ബോട്ടിന്റെ വേഗം 13 കി. മീ. ആണ്. ഒഴുക്കിന്റെ വേഗം 2.5 കി. മീ. ആയാൽ ഒഴുക്കിനെതിരെ ബോട്ടിന്റെ വേഗം എന്ത് ?
A swimmer can swim downstream at 13 km/h and upstream at 7 km/h. Find the speed of swimmer in still water.