- A1 km
- B5/3 km
- C1.25 km
- D0.6 km
Step-by-Step Solution
Upstream speed = 3s, so the boat's still-water speed = 4s and downstream = 5s. While it goes 5 km downstream the log goes 5 × s/5s = 1 km.
Answer: A) 1 km
In the time a boat goes 3 km upstream, a floating log drifts 1 km. In the time the boat goes 5 km downstream, how far does the log drift?
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