A man can row upstream at 8kmph and downstream at 13 kmph. The speed of the stre

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✪ Choose the correct option.

A man can row upstream at 8kmph and downstream at 13 kmph. The speed of the stream is

A. 2.5 km/hr
B. 4.2 km/hr
C. 5 km/hr
D. 10.5 km/hr

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