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A man can row at 10 kmph in still water....

A man can row at 10 kmph in still water. If it takes a total of 5 hours for him to go to a place 24 km away and return, then the speed of the water current is:-
एक आदमी शांत जल में 10 किमी/घंटे को चाल से चल सकता है। यदि वह 24 किमी दूर किसी स्थान पर जाने तथा आने में 5 घंटे का समय लेता है, तो पानी की धारा की चाल ज्ञात कीजिए।

A

`1/2` km/h

B

1 km/h

C

2 km/h

D

3 km/h

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