You have steamed 216 miles and consumed 19.0 tons of fuel. If you maintain the same speed, how many tons of fuel will you consume while steaming 315 miles?
• Fuel consumption rate (tons per mile) based on the first part of the trip • Using a proportion: same speed ⇒ same consumption rate • Checking units stay consistent: miles with miles, tons with tons
• How can you find how many tons of fuel are used for one mile using the first set of numbers? • Once you know tons per mile, how do you scale that up to find fuel used for 315 miles? • After you get your result, which choice is closest to your calculated value?
• Compute fuel per mile first: 19.0 tons ÷ 216 miles • Multiply your fuel-per-mile figure by 315 miles to get total tons • Double-check calculator entries (especially decimals) before matching with the choices
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