- AQ
- BP
- CR
- DS
Step-by-Step Solution
On a calm lake each boat moves at its still-water speed = (down + up) ÷ 2: P 14, Q 16, R 15.5, S 15 km/h. Q is fastest — even though S has the largest downstream speed.
Answer: A) Q
Each boat in the table was timed on a different river. If all four were raced over 30 km on a calm lake, which boat would finish first?
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