Algebrahard · Past Paper
A boat travels 24 km upstream in 6 hours and 24 km downstream in 3 hours. Find the speed of the boat in still water.
A6 km/h
B4 km/h
C8 km/h
D2 km/h
✓ Correct Answer: A — 6 km/h
Upstream speed (u-v) = 24/6=4. Downstream speed (u+v) = 24/3=8. Adding gives 2u=12 -> u=6.
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