Question
A boatman rows 4 km in 6 minutes, along the stream and
24 km in 3 hours against the stream. The speed of the stream is:Solution
Rate downstream = 4/6 x 60 = 40 km/hr Rate upstream = 24/3 = 8 km/hr Speed of current = 1/2 (Rate downstream – Rate upstream) ⇒ 1/2 (40 – 8) km/hr = 16 km/hr
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