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

Respuesta :

(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
azzinai12

Answer:

Step-by-step explanation:

The way you would do it is:

1 gallon/20 miles = x gallons/ 180 miles bc of same units

then you cross multiple and get

20x=180

which simplifies to 9

know . you know that the how much gallons of gas it takes then you multiply

9 x $3.98

but you have to round to the nearest whole number so you do

9x 4 = 36

So the answer is it cost $36 to travel 180 miles in Ethans car  

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