You have steamed 918 miles at 15.0 knots and consumed 183 tons of fuel. If you have 200 tons of usable fuel remaining, how far can you steam at 12 knots?
• Fuel consumption rate (tons per mile) based on the first leg of the voyage • Relationship between distance, speed, and time: ( \text{Speed} = \frac{\text{Distance}}{\text{Time}} ) • Using remaining fuel and the same consumption rate to find new distance at a different speed
• From the first part of the problem, how can you find how many tons of fuel are used per mile? • Once you know tons per mile, how many miles can you steam with 200 tons at that same rate? • Does changing the ship’s speed to 12 knots change the distance you can go on a fixed amount of fuel if the consumption rate is assumed the same per mile?
• Compute fuel consumption per mile correctly: divide fuel used by distance traveled, with units (tons/mile) • Use the correct operation with remaining fuel and consumption rate: should you multiply or divide to get miles? • Check whether ship speed affects the fuel-per-mile rate in this problem as stated, or only affects the time it will take to steam the new distance
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