🔍 Key Concepts

• Relationship between speed, time, and distance: ( \text{Speed} = \frac{\text{Distance}}{\text{Time}} ) • How to find fuel consumption per hour (or per mile) from a known run • Adjusting fuel usage when speed changes but fuel rate is assumed proportional to power/speed for this type of exam problem

💭 Think About

• First, from the initial leg, can you find how many hours the ship steamed using 850 tons of fuel? • Once you know the total hours and total fuel, can you compute how many tons of fuel per hour were used at 24 knots? • For the remaining distance at 19 knots, can you find how many hours the run will take, and then use your fuel-per-hour figure to estimate total fuel used?

✅ Before You Answer

• Be sure to convert distance and speed to time correctly: ( t = \frac{D}{S} ) and keep track of units (hours, miles, knots). • Double-check that you are using fuel per hour, not fuel per mile, consistently throughout the problem. • After you get your fuel amount, compare it to 850 tons. At a lower speed for a similar distance, should you expect more or less total fuel than was used on the first leg?