At your current speed of 20 knots you only have enough fuel remaining to travel 218 miles. You must travel 395 miles to reach your destination. What should you reduce your speed (knots) to in order to reach your destination?

Correct Answer: Option B — 14.9

Using Bowditch propulsion and fuel formulas, remaining range inversely relates to the cube of the speed ratio. Balancing the initial 20-knot capability over 218 miles against the required 395-mile transit calculates a necessary speed reduction to 14.9 knots.