You have steamed 1134 miles at 10 knots and consumed 121 tons of fuel. If you have to steam 1522 miles to complete the voyage, how many tons of fuel will be consumed while steaming at 12 knots?
• Fuel consumption rate: tons of fuel used per hour or per mile • Relationship between speed, time, and distance: ( \text{Speed} = \frac{\text{Distance}}{\text{Time}} ) • How a change in speed affects hours run for a given distance
• From the first leg, what is the fuel consumption per mile or per hour? Which will be more useful here? • For the remaining distance, how many hours will it take at 12 knots? How does that compare with the hours you ran at 10 knots? • Once you know the new hours or per‑mile rate, how can you scale the original fuel consumption to match the new leg’s distance and speed?
• Be sure to keep units consistent: miles, knots, hours, tons • Double‑check whether you are using per hour or per mile consumption and apply it correctly to the new leg • After you compute the fuel for the new leg, compare it to the original 121 tons to see if the answer is reasonable (should it be more or less, and by about how much?)
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