You have steamed 504 miles at 21 knots and...

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Question 1 of 2066636eea28f7522a1c51b5f4

You have steamed 504 miles at 21 knots and burning 633 barrels of fuel per day. You must decrease your consumption to 410 barrels per day with 399 miles left in your voyage. What must you reduce your speed (kts) to in order to burn this amount of fuel?

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Question 1 of 20

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🔍 Key Concepts

• Fuel consumption vs. speed – assume fuel burn per day is proportional to speed in knots for this type of exam problem • Use Speed = Distance / Time to relate miles, knots, and days • You must use the same fuel per mile relationship when changing speed and daily burn

💭 Think About

• First find how many barrels of fuel you are using per mile at the original speed and consumption • Then figure out how many days it should take to burn 410 barrels at the new daily rate, and how fast you can go over 399 miles in that time • Compare your computed speed to each answer choice and think about whether going slower or faster saves more fuel

✅ Before You Answer

• Compute fuel per mile at the original condition and make sure the units are barrels/mile • When you change to 410 barrels per day, check that your time for the remaining 399 miles matches that daily burn limit • Verify your final speed is in knots (nautical miles per hour) and is close to one of the choices without extra rounding errors

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