SOLUTION: A car uses one gallon of gasoline for every 20 miles it travels. If a gallon of gasoline costs $3.98, how much with the gas cost, to the nearest dollar, to travel 180 miles?

Algebra ->  Human-and-algebraic-language -> SOLUTION: A car uses one gallon of gasoline for every 20 miles it travels. If a gallon of gasoline costs $3.98, how much with the gas cost, to the nearest dollar, to travel 180 miles?      Log On


   

Question 872806: A car uses one gallon of gasoline for every 20 miles it travels. If a gallon of gasoline costs $3.98, how much with the gas cost, to the nearest dollar, to travel 180 miles?
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
(# of gallons)/(# of miles) = (# of gallons)/(# of miles)


(1 gallon)/(20 miles) = (x gallons)/(180 miles)


1/20 = x/180


1*180 = 20x


180 = 20x


20x = 180


x = 180/20


x = 9


It takes 9 gallons of gas to drive 180 miles


(9 gallons)*(3.98 dollars/1 gallon) = 9*3.98 dollars = 35.82


Round to the nearest dollar: 35.82 ---> 36


It costs $36 to travel 180 miles