A boat goes 16 km upstream and 24 km downstream in 6 hours. If the stream speed is 2 km/h, find the speed of the boat in still water.
A8 km/h
B10 km/h
C12 km/h
D14 km/h
Explanation
16/(v-2) + 24/(v+2) = 6. If v=10, 16/8 + 24/12 = 2 + 2 = 4 (No). Wait. If v=8, 16/6 + 24/10 = 2.66 + 2.4 = 5.06. Try v=10, 16/8 + 24/12 = 2 + 2 = 4. Let’s fix values.
Exam Relevance
- Topic: Speed, Time & Distance
- Subtopic: Boats and Streams
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