A swimmer swims 10 km upstream in 5 hours. Stream speed is 1 km/h. Swimmer speed in still water?
A2
B3
C4
D5
Explanation
Upstream speed = 10/5 = 2 km/h. S – 1 = 2 => S = 3.
Exam Relevance
- Topic: Speed, Time & Distance
- Subtopic: Boats and Streams
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