a steamer goes downstream from one port to another in 4 hours. it covers the s

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a steamer goes downstream from one port to another in 4 hours. it covers the same distance upstream in 5 hours. if the speed of stream is 2 km/hr, the distance between the ports is

Options:

A . 50km

B . 60km

C . 70km

D . 80km

Answer: Option D
Explanation :

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