- A12.5
- B12
- C11
- D13
Step-by-Step Solution
Downstream speed = 30/2 = 15 km/h; upstream = 30/3 = 10 km/h; still-water speed = (15 + 10)/2 = 12.5 km/h.
Answer: A) 12.5
A boat goes 30 km downstream in 2 hours and returns the same distance upstream in 3 hours. Find the speed of the boat in still water. (answer in km/h)
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