plz ans it fast........
Answers
Let the speed of the steamer be 'x'.
Given that steamer goes downstream in 9 hours.
Given that Speed of stream = 1 km/hr.
Downstream speed = 9(x + 1) km/hr. ------ (1)
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Given that streamer goes downstream in 10 hours.
Given that speed of stream = 1 km/hr.
Upstream speed = 10(x - 1). ------- (2)
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On solving (1) & (2), we get
= > 9(x + 1) = 10(x - 1)
= > 9x + 9 = 10x - 10
= > 9x - 10x = -10 - 9
= > x = 19
Now,
Distance between the ports :
= > 10(19 - 1)
= > 10(18)
= > 180 km/hr.
Therefore,
The speed of the steamer = 8.
The distance between the ports = 180 km/hr.
Hope it helps!