The distance between Port A and Port B is 9 nm. If a boat travels at 18 knots to Port B and returns back to Port A at 15 knots, what is the average speed for the whole journey? Note: ...
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The distance between Port A and Port B is 9 nm. If a boat travels at 18 knots to Port B and returns back to Port A at 15 knots, what is the average speed for the whole journey? Note: ...