SOLUTION: Over the weekend, Brady and Jack drove to Key West to go scuba diving. Now they're preparing to go home. Brady needs gas for his jeep, which gets 21 miles per gallon for gas mileag

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: Over the weekend, Brady and Jack drove to Key West to go scuba diving. Now they're preparing to go home. Brady needs gas for his jeep, which gets 21 miles per gallon for gas mileag      Log On


   

Question 1127863: Over the weekend, Brady and Jack drove to Key West to go scuba diving. Now they're preparing to go home. Brady needs gas for his jeep, which gets 21 miles per gallon for gas mileage. When he stops at the gas station, he already has 5 gallons of gas in his tank. He buys more gas for $1.40 per gallon. If Brady spends $19.50 on gas, what is the total distance the boys could travel?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
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..., 21 miles per gallon,... Brady needs gas for his jeep, which gets 21 miles per gallon for gas mileage. When he stops at the gas station, he already has 5 gallons of gas in his tank. He buys more gas for $1.40 per gallon. If Brady spends $19.50 on gas, what is the total distance the boys could travel?
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x gallons to top-off

Tank holds 5+x gallons.

x%2Agallons%2A1.4%28dollars%2Fgallon%29=19.5%2Adollars
1.4x=19.5
x=19.5.1%2C4
x=13.93%2Agallons

Total distance that the full tank will allow:
highlight%28%285%2B19.5%2F1.4%29%2Agallons%2A21%28miles%2Fgallons%29%29-------compute this.




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397.5