. The speed of a boat in still water is 53km/hr. If the speed of the boat against the stream is 34 km/hr, what is the speed of the stream?
21 km/hr
18 km/hr
19 km/hr
20 km/hr
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Given : The speed of a boat in still water is 53km/hr.
the speed of the boat against the stream is 34 km/hr,
Ti Find : the speed of the stream?
21 km/hr
18 km/hr
19 km/hr
20 km/hr
Solution:
The speed of a boat in still water is 53km/hr.
speed of the stream = X km/hr
speed of the boat against the stream = Speed of boat - speed of stream
= 53 - X km/hr
speed of the boat against the stream is 34 km/hr,
Equate both
=> 53 - X = 34
=> X = 53 - 34
=> X = 19
the speed of the stream = 19 km/hr
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