1.

A man rides the boat 30 km downstream and returns in total 8 hours. If the speed of the boat in still water is four times the speed of the stream, then the speed of the stream is

A. 1 किमी/घंटा
B. 2 किमी/घंटा
C. 4 किमी/घंटा
D. 3 किमी/घंटा
Answer» C. 4 किमी/घंटा


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